|Born||Jay Dee Penn
December 13, 1978
Kailua, Hawaii, U.S.
|Other names||The Prodigy,
|Height||5 ft 9 in (1.75 m)|
|Weight||155 lb (70 kg; 11 st 1 lb)|
Lightweight (2001-2003, 2007-2010)
Welterweight (2004-2006, 2010-2012)
|Reach||70 in (178 cm)|
|Style||Brazilian Jiu-Jitsu, Boxing|
|Team||B.J. Penn's MMA
Nova União (formerly)
|Rank||5th Degree Black belt in Brazilian Jiu-Jitsu|
|Mixed martial arts record|
|Notable school(s)||Hilo High School|
|Mixed martial arts record from Sherdog|
|Representing United States|
|World Jiu-Jitsu Championship|
|2000 Rio de Janeiro||-67kg|
|1999 Rio de Janeiro||-73kg|
|1998 Rio de Janeiro||-67kg|
Jay Dee "B.J." Penn (born December 13, 1978) is an American professional mixed martial artist and Brazilian Jiu-Jitsu practitioner. Penn debuted and competed in the Ultimate Fighting Championship (UFC), and later in K-1. Prior to fighting for the UFC, he became the first American Gold medalist of the World Jiu-Jitsu Championship. In mixed martial arts, Penn has competed in the Featherweight, Lightweight, Welterweight, Middleweight, and Heavyweight divisions. As a former UFC Lightweight Champion and UFC Welterweight Champion, he is only the second fighter in UFC history to win titles in multiple weight classes. Penn was also a Co-champion in the UFC 41 Lightweight Tournament, due to an eventual draw opposite Caol Uno in the tournament finale. Through his tenures as champion, Penn unofficially unified the UFC Lightweight Championship (against Sean Sherk) and broke the all-time lightweight title defense record. Penn was inducted into the UFC Hall of Fame, as the inaugural inductee in the Modern-Era Wing by career-long rival Matt Hughes, during International Fight Week in July 2015.
During his reign, Penn holds the distinction of being undefeated as a Lightweight for over eight years, spanning a nine-fight unbeaten streak in the division. He emerged as one of the top pound-for-pound mixed martial artists in the world early in his career (a recognition he would hold until his initial retirement from the sport), defeating opponents that included Din Thomas, Caol Uno, Paul Creighton, and Matt Serra. Penn soon-after secured his initial world title with K-1, submitting Takanori Gomi for the Rumble on the Rock Lightweight Championship. He immediately ascended into the Welterweight division of the Ultimate Fighting Championship, submitting long-reigning then-champion Matt Hughes to capture the UFC Welterweight Championship, which was eventually relinquished due to contract disputes.
Penn therefore departed from the promotion to compete exclusively for K-1. He submitted Duane Ludwig and defeated Rodrigo Gracie and Renzo Gracie before eventually re-signing with the Ultimate Fighting Championship. Following contentious losses to Georges St-Pierre and Matt Hughes, Penn returned to the Lightweight division to submit both Jens Pulver and Joe Stevenson en route to claiming the vacant UFC Lightweight Championship. He made a record three subsequent title defenses; defeating uncrowned champion Sean Sherk and challengers Kenny Florian and Diego Sanchez before losing his title to Frankie Edgar in a disputed decision.
In the sunset of his career, Penn returned as a Welterweight to successfully complete his trilogy with Matt Hughes, before retiring between two losses and a draw in attempts to regain the UFC Welterweight Championship. In pursuit of a career resurgence with a descent into the Featherweight division, Penn conclusively announced his retirement following another loss to Frankie Edgar.
UFC President, Dana White credits Penn as the man who brought the lower weight divisions into the mainstream of mixed martial arts; claiming Penn to be "the first crossover pay-per-view star for the Ultimate Fighting Championship's lighter weight divisions", as well as that "[through his] accomplishments, B.J. Penn built the 155-pound division". Credited as the greatest Lightweight combatant in mixed martial arts history, Penn's domination of the division, as well as his performances in higher weight classes have him regarded as one of the greatest fighters in the history of the sport.
- 1 Background
- 2 Mixed martial arts career
- 2.1 Brazilian Jiu-Jitsu
- 2.2 Ultimate Fighting Championship
- 2.3 Fighting and Entertainment Group
- 2.4 Return to the UFC
- 3 Personal life
- 4 Legacy and influence
- 5 Championships and accomplishments
- 6 Mixed martial arts record
- 7 Pay-per-view buy rates
- 8 Filmography
- 9 See also
- 10 References
- 11 External links
Penn was born in Hilo, Hawaii, USA to Jay Dee Penn, an Irish-American, and Loraine Shin, a Korean-American. At the age of 17, Penn began training in Brazilian Jiu-Jitsu after being introduced to it by his neighbor, Tom Callos. Callos had put up fliers in local gyms looking for people to train with, and B.J.'s father Jay Dee Penn had called Callos and said his boys were interested. Callos then taught B.J. and his brother what he knew. Shortly thereafter, B.J. moved to San Jose, California to begin training at the Ralph Gracie BJJ academy with Dave Camarillo, who he lived with and became close friends with. It was here during his time in San Jose that he decided to pursue a career in martial arts (albeit not mixed martial arts at the time).
Mixed martial arts career
In 1997 Penn began training Brazilian Jiu-Jitsu under Ralph Gracie, eventually earning his purple belt from Gracie. At that point he moved to Nova União where he was eventually awarded his black belt in 2000 by Andre Pederneiras. A few weeks later he became the first non-Brazilian to win the black-belt division of the World Jiu-Jitsu Championship held in Rio de Janeiro, Brazil. While Penn's most well-known and prestigious achievement was placing first in the black belt division in the 2000 world championships, he had success at the Mundials in previous years. In 1999, at the age of 20, Penn finished 3rd, earning himself a bronze medal in the brown belt division, losing only to Fernando "Tererê" Augusto, and in 1998, earned a silver medal, placing 2nd in the blue belt division. Penn is thought to have earned the fastest legitimate black belt of all active Brazilian Jiu-Jitsu practitioners.
Ultimate Fighting Championship
His accomplishments in the World Jiu-Jitsu Championship caught the attention of the Ultimate Fighting Championship, which convinced him to switch to MMA. Penn made his mixed martial arts debut with the company on May 24, 2001, with a win over Joey Gilbert at UFC 31. He then demonstrated strong striking skills, knocking out lightweights Din Thomas and Caol Uno before suffering a decision loss in a championship fight against UFC Lightweight Champion, Jens Pulver. In 2003, after Pulver left the UFC and relinquished his title, a tournament to crown a new champion flopped when Penn fought Uno to a draw in the finals at UFC 41, a failure which caused the UFC to later suspend its lightweight division. Penn bounced back later in the year with a victory over future PRIDE Lightweight Champion Takanori Gomi to earn his first MMA championship, the Rumble on the Rock Lightweight Championship, in K-1 Fighting Network's Rumble on the Rock, an MMA organization promoted by Penn's brother, and Fighting and Entertainment Group (FEG), the parent company of the largest kickboxing organization, K-1.
Penn received his first UFC Championship in 2004 at UFC 46: Supernatural. Penn jumped up in weight classes to challenge the five-time defending UFC Welterweight Champion Matt Hughes to fill a title contention slot in a division where Hughes had already defeated all the available opposition. Heavily favored to win, Hughes lost the fight four minutes into the first round by rear naked choke after giving up his back with only 23 seconds left in the round, in a bout which remains as one of the biggest upsets, as well as one of the greatest submission victories in mixed martial arts history.
Fighting and Entertainment Group
Penn signed to exclusively fight for the Japanese Fighting and Entertainment Group's (FEG) K-1 promotion citing a lack of challenging fights left for him in the UFC. The UFC promptly stripped him of the welterweight title, claiming Penn breached his contract and that the signing constituted him refusing to defend his title. Penn filed a suit against the UFC and publicized his side of the conflict, claiming his UFC contract had already expired. Penn filed a motion to stop the UFC from awarding a new welterweight title, but that motion was denied.
In his second fight for FEG, Penn fought again at welterweight (170 pounds) and defeated Duane Ludwig at the 2004 K-1 MMA Romanex show in under five minutes by arm triangle choke. Following the Ludwig fight, Penn moved up in weight class to face the undefeated Rodrigo Gracie at middleweight (185 pounds). Penn won by decision, extending his winning streak to four fights. On March 26, 2005, at the inaugural event of FEG's new MMA promotion Hero's, Penn faced future UFC Light Heavyweight Champion Lyoto Machida, losing by unanimous decision at K-1 Hero's 1. The fight happened at an open weight class with Penn weighing in at 86.5 kilograms (191 lb) and Machida 102 kilograms (225 lb). Later that year at K-1 World Grand Prix Hawaii, Penn returned to middleweight to face Pride Fighting Championship veteran Renzo Gracie, which he won by unanimous decision.
Return to the UFC
In early 2006 at UFC 56, UFC president Dana White announced that Penn and the UFC had agreed to a settlement and Penn was to return as a top welterweight contender. Penn re-debuted on March 4 at UFC 58, losing to Georges St-Pierre by split decision in a fight that determined the number one welterweight contender. Although St. Pierre was declared the winner after a three round decision, some believed that Penn had done enough to earn himself the victory, causing noticeably more damage throughout the fight, as Joe Rogan described Georges St-Pierre’s face being “a bloody mess” while B.J. Penn “barely having a scratch on him." Despite having lost the bout, Penn's performance against Georges St-Pierre, is considered to be one of the best put forth against the future UFC Champion.
After new top contender St. Pierre injured himself during training, the UFC announced that Penn would replace St. Pierre in an upcoming title fight, setting up a highly anticipated rematch with Hughes for UFC 63 on September 23, 2006.In the bout, Penn controlled the first two rounds, but sustained a rib injury during the scramble to take Hughes' back in round two. He was visibly different in the third round, appearing exhausted and missing punches he was landing earlier. Hughes was able to take Penn to the mat, and in side control crucifix position rained punches on Penn's head until referee "Big" John McCarthy stopped the fight at 3:53 of the third round, making this the first time that Penn had been stopped in a fight. In an interview found on Penn's personal website, Penn stated that by round three he could hardly breathe and had no "mobility in his core." Despite the injury, Penn congratulated Hughes, calling him a great fighter and saying he deserved the victory.
Penn was a coach for The Ultimate Fighter 5, which aired on April 5, 2007. Penn lead a team of eight lightweight fighters, and fought a rematch against Jens Pulver at the conclusion of the series on June 23, 2007. He won with a rear naked choke in the second round after controlling Pulver from the mount and then taking Pulver's back. Although he held the choke for a moment after Pulver tapped out, the two then embraced, with both later saying they no longer held any ill will against each other.
On July 7, 2007, during the post-fight press conference of UFC 73, UFC president Dana White announced that Penn would stay at lightweight to fight current UFC lightweight champion Sean Sherk. However, Sean Sherk subsequently was suspended by the California State Athletic Commission, and the status of the possible title fight was left in limbo as he pursued his appeals. With Sherk's title status still in limbo after months of hearings, the UFC scheduled Penn to fight Joe Stevenson at UFC 80 on January 19, 2008 for an interim lightweight title. The subsequent final decision by the California State Athletic Commission, which did not overturn Sherk's suspension, led to the title being stripped from Sherk and the Penn-Stevenson fight being upgraded to a full title bout, with the winner facing Sherk in their first defense.
Penn knocked Stevenson down seconds into the first round with a right uppercut, then took Stevenson down, delivering a well placed elbow from the top position that inflicted a serious cut near Stevenson's hairline. In the second round, Stevenson fought more aggressively but was still unable to threaten Penn. Penn worked to back mount and defeated him by rear naked choke at 4:02 of the second round to win the Lightweight Championship. He celebrated the win by licking Joe Stevenson's blood off of his gloves. The win for Penn was awarded Beatdown of the Year by Sherdog for 2008. With this win, Penn became the second man (after Randy Couture) to win UFC titles in two different weight classes.
On May 24, 2008 at UFC 84 at the MGM Grand Garden Arena in Las Vegas, Nevada, Penn fought former champion Sean Sherk in his first title defense bout. The fight was billed by play-by -play commentator Mike Goldberg as the "biggest fight in the history of the UFC lightweight division". Sherk attempted to take Penn down only once (in the first round), instead the fighters traded punches and leg kicks for the remainder of the fight. Penn landed jabs several times, utilizing his reach advantage over Sherk. In the closing seconds of the third round, Penn threw a punch and a hook that backed Sherk into the cage. Sherk then ducked under another punch – possibly to shoot for a takedown – when he was hit in the head by a flush flying left knee from Penn. Sherk went down and Penn continued with strikes, but the round ended before the referee stopped the fight. However, Sherk was unable to continue and Penn was declared the victor by TKO (strikes). After the fight, in response a question by Joe Rogan about his future, Penn asked the crowd if they wanted to see him fight Georges St-Pierre and was answered with a loud ovation. Later, Penn told Fighters Club TV that he would face the winner of UFC 87 Welterweight title fight between Georges St-Pierre and Jon Fitch, which St-Pierre ended up winning by unanimous decision. St-Pierre's victory led to the scheduling of B.J.'s next fight as a Welterweight Championship fight.
Welterweight title shot
Penn challenged Georges St-Pierre for St-Pierre's welterweight title on January 31, 2009, the night before the Super Bowl. The date led UFC 94 to be billed as the "UFC Super Bowl Weekend," and it was anticipated to be the biggest UFC pay-per-view event ever. Before the fight with St-Pierre, Penn made a controversial comment that he was going to try to kill St-Pierre in the ring, but he later explained that he was speaking figuratively.
The first round of the fight was somewhat even, with Penn exercising elusive head movement, fast hands and good take-down defense, thwarting all of St-Pierre's take-down attempts while both exchanged punches. In the ensuing three rounds, however, Penn turned out a lackluster performance. St-Pierre scored his first take-down of the night midway through the second round, and by the end of the round Penn was visibly tired. At the start of round three, St-Pierre landed a "superman punch" that bloodied Penn's nose and shortly took Penn down again. From that point on, St-Pierre took Penn down almost at will, repeatedly passed Penn's renowned guard, and persistently punished the Hawaiian with a ground-and-pound attack. Penn later admitted that he could not recall anything that happened during the 3rd and 4th rounds because "I was probably borderline knocked out or something." At the end of the fourth round, after more of St-Pierre's ground-and-pound onslaught, and upon B.J.'s command, Penn's brother requested that the referee stop the fight. After the fight, Penn failed to attend the post-fight press conference due to having stayed in the hospital.
A controversy arose during the fight as St-Pierre's corner-men were spotted rubbing St-Pierre's back immediately after applying Vaseline to his face. Members of the Nevada State Athletic Commission (NSAC) came into the octagon and wiped St-Pierre's torso down. Penn later sent a formal request to the NSAC, asking them to investigate. Despite all of the complaints by the Penn camp, the NSAC ruled that there was no infraction. This incident was famously coined by Penn fans as the "Greasegate" and remains as one of the biggest controversial moments in UFC history.
"I think he absolutely, positively knew that he was rubbing grease on him. Do I think George was trying to cheat? Absolutely not at all. But that corner man was rubbing grease on him." -Dana White, post fight at UFC 94.
The rules of the UFC were modified so that only the official "cut men" would be allowed to have or apply Vaseline to the fighters. The procedures governing the transition from the fighters walk-in to the cage and while in the cage were also changed. Previously, fighters would walk up next to the cage, see the cut man who would apply Vaseline, be checked by the referee, and then have an opportunity to speak with or hug their coaches or cornermen before entering the cage. To prevent an opportunity for the fighters to have Vaseline applied illicitly, fighters now must first part from any company, have Vaseline applied by the cut man, be checked by the referee, and then go directly to the cage. Finally, no cornermen will be allowed to have Vaseline in the cage between rounds. In this way, the fighter's contact with Vaseline is fully controlled by the cut men and referee, who work independently of the UFC.
UFC President Dana White said that the incident had no effect on the outcome of the fight although he wished the incident had not happened. Penn did, after all, quit after the fourth round. In his first post-fight interview Penn spoke of his belief that if St-Pierre were found to have been "greased" he would lose all respect for him, while admitting that "[I] definitely got my butt kicked." Penn claims that before the match he warned the NSAC that St-Pierre might use grease intentionally. St-Pierre responded to the allegations by offering to fight a rematch against Penn. Penn went on record as accepting the offer for a re-match. Following his informal acceptance of a proposed second rematch, Penn filed a formal complaint with Nevada State Athletic Commission seeking to prevent St-Pierre from fighting by suspending St-Pierre's fighter's license. In addition, Penn unsuccessfully requested the suspension of St-Pierre's cornermen, Greg Jackson and Phil Nurse, a fine of $250,000, and overturning the result of the fight to a no-contest.
Return as Lightweight Champion
Penn began negotiations to fight Kenny Florian in the summer of 2009. The Florian-Penn title fight was scheduled for UFC 99, but B.J. Penn requested more time off after his fight with GSP. He defended his title against Florian on August 8, 2009 at UFC 101. Penn looked noticeably in better physical shape than his previous outings at 155 lbs and negated any sort of takedown offense from Florian the entire match despite his opponent's persistence in grappling and engaging the clinch.
On his feet, Penn avoided virtually any damage, constantly stuffing or evading any attempts of a left high kick, punches, or elbows from Florian when the two departed from the clinch. In a measured performance, Penn preferred to pace himself in his standup, occasionally showing explosive bursts of striking up until the fourth round, where he executed a powerful takedown and quickly assumed the half guard position, punishing the contender with elbows until gaining the full mount, where punches followed to continue the ground and pound assault from the BJJ specialist.
A scramble ensued, where Florian gave up his back twice but was unable to escape Penn's mount, the second time Penn took his opponent's back, he looked to trap Florian's arm with one of his legs, but was unable to do so, instead striking the liver of Florian with his heel, which eventually led Penn to secure a rear naked choke at 3:45 of the fourth round to defend his lightweight championship title.
Penn fought Diego Sanchez for the UFC Lightweight Championship on December 12, 2009 at UFC 107. Penn negated virtually any offense from the contender, exercising good footwork and elusive head movement whilst remaining flawless in his takedown defense on 27 attempts from Sanchez. He stalked his opponent for large periods of the match and stunned Sanchez early, dropping him; following up with multiple clean shots, which Sanchez showed good durability in weathering. Penn, showing good conditioning for the duration of the bout, continued to stuff all takedowns, punches and left high kicks from Sanchez and dominated with aggressive bursts of striking throughout. He hurt Sanchez several times, until finally rocking him with a flurry in the final round, swarming to finish the combo with a right high kick. The kick opened up a huge cut on Sanchez's forehead above his left eye, causing the fight to be halted on doctor's advice at 2:47 of the fifth round with a TKO. The victory marked only the second fight in UFC history to end in the fifth round, and also earned Penn the distinction of being the only man to have stopped Sanchez.
The performance marked the third time Penn had successfully finished a fight in defending his UFC Lightweight Championship, setting a new record of lightweight title defenses, by breaking the previous record of two defenses by Jens Pulver. Later during the post-fight press conference UFC President Dana White told the media he was proud of Penn's willingness to take MMA more seriously in his training when earlier he felt Penn had coasted through the UFC solely on natural talent.
Losing the title
Penn's next defense was on April 10, 2010 at UFC 112 against Frankie Edgar. Despite being an overwhelming favorite coming into the fight, Penn lost the closely contested bout by unanimous decision; breaking his eight-year undefeated streak in the lightweight division. 8 of 9 media outlets scored the bout in favor of Penn. After the fight, Penn congratulated Edgar on winning the belt. Despite this, the results garnered much criticism as many disagreed with the judges decision after the five round fight, having believed that Penn had done enough to earn himself the victory. Due to the controversy surrounding the outcome, an immediate rematch with Edgar was scheduled as his first title defense.
Penn fought Edgar in a rematch at UFC 118. Edgar was able to negate his ground offense and control the fight with good movement and striking combinations. All three judges scored the fight 50–45 for Edgar.
Return to welterweight and hiatus
Penn fought Matt Hughes at UFC 123 in a rubber match after their previous two fights at UFC 46 and UFC 63. Penn defeated Hughes in 21 seconds of the first round by knockout after flooring Hughes with a right hand and following with additional strikes on the mat. Penn earned knockout of the night honors for his performance.
Following the UFC 123 post-fight press conference, UFC president Dana White said that Penn would fight top welterweight contender Jon Fitch at UFC 127 in Australia. Penn trained with Matt Hughes and Floyd Mayweather, Sr. in preparation for the fight. Penn surprised Fitch by taking him to the ground instead of using his stand up skills. The fight ended in a draw, snapping Fitch's five fight UFC win streak, and Penn stated that he would gladly have a rematch in the future. UFC matchmaker Joe Silva stated that neither the fans nor the UFC are interested in a Penn-Fitch rematch.
Penn was expected to face Carlos Condit on October 29, 2011 at UFC 137. B.J. Penn relocated his camp to Southern California in an effort to prepare for the bout. Penn was joined in California by former UFC middleweight and Ultimate Fighter winner Kendall Grove and B.J.'s brother Reagan Penn, as they both prepared for their August 27 fights on the ProElite show in Hawaii. However, on September 7, Condit was pulled from the bout and replaced Nick Diaz in the main event against Georges St-Pierre. Dana White stated that Penn will fight Nick Diaz in the main event at UFC 137 after GSP pulled out due to knee injury. Penn lost via unanimous decision after winning the first round by crisp boxing as well as mixing in a takedown against the former Strikeforce Welterweight Champion, but was unable to mount any significant offense or defense against Diaz's stand-up attack in the remaining two rounds.
Immediately following the loss to Diaz, Penn announced his plans to retire, saying into the microphone, "Joe, this was probably the last time you'll see me in here. I can't keep performing at the top level. That's it Joe. I got a daughter and another daughter on the way, I don't want to go home looking like this. I'm done." On November 1, Penn posted a message to fans on his website indicating that he plans to take some time off, but the retirement decision is not yet official. He said, "I want to thank all the fans for their love and support. I have decided to take some time off to enjoy life, train and teach. I will keep you guys posted with what’s next." A few months afterwards, B.J. tweeted angrily at both Jon Fitch and Nick Diaz, causing many to believe that Penn would be returning from his retirement within the near future. His manager has stated that the old B.J. is back and could be returning to MMA. In April 2012 UFC president Dana White said B.J. Penn turned down a fight with the reigning Strikeforce Lightweight Champion, Gilbert Melendez, and that Penn wants to continue at 170 pounds "whenever he is ready". White also said he feels that B.J. Penn deserves to be in the UFC Hall of Fame, stating that he was a pioneer for the lightweight division, at a time when many believed that there couldn't be any stars at 155 pounds.
Several months after declaring his retirement from mixed martial arts, B.J. Penn announced that he would be returning to the octagon after repeated challenges made by welterweight prospect Rory MacDonald; stating, "Rory, I accept your challenge!". Initially, Penn was expected to face Rory MacDonald on September 22, 2012 at UFC 152. However, MacDonald pulled out of the bout after sustaining a cut to the forehead while training. Penn vs. MacDonald eventually took place on December 8, 2012 at UFC on Fox 5. Penn lost the fight via unanimous decision. After the fight Dana White stated that he'd like to see B.J. Penn retire from mixed martial arts, although Penn has hinted a desire to return to the UFC's lightweight division. Following months of silence regarding his future, Penn spoke with Ariel Helwani in an interview for UFC on Fox, where he admitted that he was still undecided on his future, telling him that "at this moment, my guess is probably a little better than yours, but I don't know, I'm enjoying what I'm doing."
Move to featherweight
An announcement was made on UFC Tonight in September 2013 that Penn will return from his hiatus and move to the Featherweight division to coach against rival, Frankie Edgar for the 19th season of The Ultimate Fighter. This move marked Penn's second appearance serving as a head coach for The Ultimate Fighter, his first being The Ultimate Fighter 5, opposite Jens Pulver. The season aired on Fox Sports 1 and featured middleweight and light heavyweight contestants. The two coaches faced each other for the third time on July 6, 2014 at The Ultimate Fighter 19 Finale.
Penn returned to Nova Uniao under coach Andre Pederneiras (who promoted Penn to black belt in Brazilian Jiu-Jitsu in 1999) in preparation for his fight camp against Edgar; training alongside former UFC Bantamweight Champion Renan Barão and UFC Featherweight Champion José Aldo. Later in the camp, he also enlisted former UFC Bantamweight Champion Dominick Cruz in Hilo, Hawaii for his preparation. Penn lost the one sided bout by TKO in the third round. At the conclusion of the bout, Penn announced his intentions to retire again during the event's post-fight press conference.
“He’s one of the best 155-pounders of all time. He built that weight class and he was responsible for helping build the UFC. That’s his legacy.” -Dana White, during the post-fight press conference at The Ultimate Fighter 19 Finale.
In January 2016, after an 18-month hiatus, the 37 year old Penn announced his intentions to return to active competition with plans to continue in the UFC's featherweight division.  He was briefly expected to return in April 2016 at UFC 197. However, Penn's return was delayed after an investigation into criminal allegations made against him was launched. In turn, Penn was expected to face Dennis Siver on June 4, 2016 at UFC 199. However, Siver was forced out of the bout in early May with an undisclosed injury. He was replaced by Cole Miller. Subsequently, Penn himself was removed from the card on May 23 after he was flagged for the use of a medically-administered IV during a non-fight period, when the use of IV had been recently banned 365 days a year.
His nickname "B.J." is a shortened version of another nickname "Baby Jay", which itself derives from the fact that Penn is the youngest of his brothers all named "Jay Dee Penn". B.J.'s father, who is Irish and English, named 3 of his 4 children "Jay Dee", while the fourth is Reagan. In order to avoid confusion each of the sons named "Jay Dee" goes by a nickname: "Jay", "Jay Dee", and "Baby Jay". Penn's mother, Lorraine Shin, is of Korean descent.
Penn takes much pride in his Hawaiian upbringing. His trainer Rudy Valentino had stated that Penn plays Hawaiian music during his walk-out entrances, a combination of Hawaii ’78 into E Ala E, both performed by Hawaiian musician Israel Kamakawiwoʻole as a tribute to his Hawaiian heritage and respect for his opponents, fans and the fight game; a tradition which Penn still continues. Penn has also stated that he identifies strongly with his Korean roots and has traveled to Korea to hold seminars. He also said that he gets his hot temper from his Korean side which helps him use this energy in his fights.
Although they never married, Penn loves his girlfriend, admitting that they never got married since a large percentage of Hawaiians have children out of wed-lock and "it doesn't matter that much in Hawaii." With his girlfriend Penn has two daughters. Penn is the co-author of Mixed Martial Arts: The Book of Knowledge, an instructional book on mixed martial arts fighting. Penn, along with Dave Weintraub, authored the autobiography Why I Fight: The Belt is Just an Accessory in 2010. The book debuted at #22 on the New York Times bestseller list. Penn appeared in the film Never Surrender in 2009.
Legacy and influence
Since his debut in the Ultimate Fighting Championship, Penn emerged as one of the biggest stars in the history of sport, headlining a total of eleven main-events (nine pay-per-view main-events) for the UFC during the course of his career (in addition to five for K-1). Penn was regarded as one of the most controversial and outspoken players in the history of mixed martial arts whose influence was considered instrumental in popularizing the UFC around the world in the 2000s and 2010s. His impact on the sport went beyond his UFC titles and dominant performances inside the octagon. A longtime advocate for drug testing in the sport, Penn was also the first to introduce an independent foundation in MMA to promote, coordinate and monitor the fight against performance enhancing drugs in sports with the inclusion of Voluntary Anti-Doping Association (VADA) during his and his opponent's training camps.
Recognized for his role in the resurgence of the lightweight division, Penn is considered to have been the division's most influential figure, turning the weight class around (in bouts with Sean Sherk, Kenny Florian, Diego Sanchez, Jens Pulver, and Joe Stevenson) to become one of the UFC's most popular, at a time when they had considered disbanding the division altogether and many publications had questioned whether lighter-weights could be successful. His nickname, The Prodigy originates prior to him competing in mixed martial arts, from accomplishing his extraordinary feat in the sport of Brazilian Jiu Jitsu (earning his black belt in just under three years and winning the black belt division in the World Jiu-Jitsu Championship only three weeks later). His biography on the UFC website expressed this accomplishment as "an astonishing achievement in a sport where it takes the average athlete ten years or more to reach black belt status.
The Ultimate Fighting Championship's inaugural signature gym located in Honolulu, Hawaii, 'UFC Gym BJ Penn' is named in Penn's honor. The gym has grown to become one of the largest and most successful in the state of Hawaii. Penn (in his knockout victory over former UFC Lightweight Champion Sean Sherk) is featured in the UFC "Evolution" pay-per-view introduction. He has a guaranteed spot in the UFC Hall of Fame following his retirement, according to Dana White.
Ranking in mixed martial arts history
Penn is regarded amongst the greatest mixed martial artists of all-time. He is widely considered the greatest Lightweight (155 lbs) competitor in the sport's history, in addition to one of the greatest Welterweight (170 lbs) competitors as well (in his performances against Georges St-Pierre and Matt Hughes). Penn was also simultaneously ranked number one in both of these divisions following his back-to-back submission victories over Takanori Gomi and Matt Hughes, where he is the only fighter to hold such an honor.
Renowned boxing coach Freddie Roach has famously described Penn as the best boxer in all of mixed martial arts. Former UFC Middleweight Champion Anderson Silva, has said on numerous occasions that he believes Penn to be the greatest pound-for-pound fighter in the history of the sport. UFC Hall of Famer, UFC 10 and UFC 11 Tournament Champion and former UFC Heavyweight Champion Mark Coleman acknowledges Penn as his idol in the sport of mixed martial arts. Penn was ranked within the top five in the FightersOnly! Magazine '100 Greatest Fighters in History'.
UFC Hall of Fame
During the televised broadcast of UFC 187 in May 2015, it was revealed on Fox Sports that Penn would be inducted into the revamped UFC Hall of Fame under the Modern Category during International Fight week festivities prior to UFC 189.
Championships and accomplishments
Mixed martial arts
Mixed martial arts record
|Professional record breakdown|
|28 matches||16 wins||10 losses|
|Loss||16–10–2||Frankie Edgar||TKO (punches)||The Ultimate Fighter: Team Edgar vs. Team Penn Finale||July 6, 2014||3||4:16||Las Vegas, Nevada, United States||Featherweight bout.|
|Loss||16–9–2||Rory MacDonald||Decision (unanimous)||UFC on Fox: Henderson vs. Diaz||December 8, 2012||3||5:00||Seattle, Washington, United States|
|Loss||16–8–2||Nick Diaz||Decision (unanimous)||UFC 137||October 29, 2011||3||5:00||Las Vegas, Nevada, United States||UFC Welterweight title eliminator; Fight of the Night.|
|Draw||16–7–2||Jon Fitch||Draw (majority)||UFC 127||February 27, 2011||3||5:00||Sydney, New South Wales, Australia|
|Win||16–7–1||Matt Hughes||KO (punches)||UFC 123||November 20, 2010||1||0:21||Auburn Hills, Michigan, United States||Return to Welterweight; Knockout of the Night.|
|Loss||15–7–1||Frankie Edgar||Decision (unanimous)||UFC 118||August 28, 2010||5||5:00||Boston, Massachusetts, United States||For the UFC Lightweight Championship.|
|Loss||15–6–1||Frankie Edgar||Decision (unanimous)||UFC 112||April 10, 2010||5||5:00||Abu Dhabi, United Arab Emirates||Lost the UFC Lightweight Championship.|
|Win||15–5–1||Diego Sanchez||TKO (doctor stoppage)||UFC 107||December 12, 2009||5||2:37||Memphis, Tennessee, United States||Defended the UFC Lightweight Championship; Extended the title defense record.|
|Win||14–5–1||Kenny Florian||Submission (rear-naked choke)||UFC 101||August 8, 2009||4||3:54||Philadelphia, Pennsylvania, United States||Defended the UFC Lightweight Championship; Submission of the Night; Tied the title defense record.|
|Loss||13–5–1||Georges St-Pierre||TKO (corner stoppage)||UFC 94||January 31, 2009||4||5:00||Las Vegas, Nevada, United States||Welterweight bout; For the UFC Welterweight Championship.|
|Win||13–4–1||Sean Sherk||TKO (flying knee and punches)||UFC 84||May 24, 2008||3||5:00||Las Vegas, Nevada, United States||Defended the UFC Lightweight Championship.|
|Win||12–4–1||Joe Stevenson||Submission (rear-naked choke)||UFC 80||January 19, 2008||2||4:02||Newcastle upon Tyne, United Kingdom||Won the vacant UFC Lightweight Championship; Submission of the Night|
|Win||11–4–1||Jens Pulver||Submission (rear-naked choke)||The Ultimate Fighter 5 Finale||June 23, 2007||2||3:12||Las Vegas, Nevada, United States||Return to Lightweight.|
|Loss||10–4–1||Matt Hughes||TKO (punches)||UFC 63: Hughes vs. Penn||September 23, 2006||3||3:53||Anaheim, California, United States||For the UFC Welterweight Championship; Fight of the Night.|
|Loss||10–3–1||Georges St-Pierre||Decision (split)||UFC 58: USA vs. Canada||March 4, 2006||3||5:00||Las Vegas, Nevada, United States||UFC Welterweight title eliminator.|
|Win||10–2–1||Renzo Gracie||Decision (unanimous)||K-1: World Grand Prix Hawaii||July 29, 2005||3||5:00||Honolulu, Hawaii, United States||Return to Middleweight; K-1 World Grand Prix Hawaii Superfight.|
|Loss||9–2–1||Lyoto Machida||Decision (unanimous)||K-1: Hero's 1||March 26, 2005||3||5:00||Saitama, Saitama, Japan||Openweight bout; Penn weighed in at 191 lbs and Machida at 225 lbs.|
|Win||9–1–1||Rodrigo Gracie||Decision (unanimous)||K-1 Rumble on the Rock 6||November 20, 2004||3||5:00||Honolulu, Hawaii, United States||Middleweight debut.|
|Win||8–1–1||Duane Ludwig||Submission (arm-triangle choke)||K-1 MMA: Romanex||May 22, 2004||1||1:45||Saitama, Saitama, Japan|
|Win||7–1–1||Matt Hughes||Submission (rear-naked choke)||UFC 46||January 31, 2004||1||4:39||Las Vegas, Nevada, United States||Welterweight debut; Won the UFC Welterweight Championship; Stripped of title when Penn signed with K-1.|
|Win||6–1–1||Takanori Gomi||Submission (rear-naked choke)||K-1 Rumble on the Rock 4||October 10, 2003||3||2:35||Honolulu, Hawaii, United States||Won the Rumble on the Rock Lightweight Championship.|
|Draw||5–1–1||Caol Uno||Draw (split)||UFC 41||February 28, 2003||5||5:00||Atlantic City, New Jersey, United States||For the UFC Lightweight Championship; UFC 41 Lightweight Tournament Final.|
|Win||5–1||Matt Serra||Decision (unanimous)||UFC 39||September 27, 2002||3||5:00||Uncasville, Connecticut, United States||UFC 41 Lightweight Tournament Semifinal.|
|Win||4–1||Paul Creighton||TKO (punches)||UFC 37||May 10, 2002||2||3:23||Bossier City, Louisiana, United States|
|Loss||3–1||Jens Pulver||Decision (majority)||UFC 35||January 11, 2002||5||5:00||Uncasville, Connecticut, United States||For the UFC Lightweight Championship.|
|Win||3–0||Caol Uno||KO (punches)||UFC 34||November 2, 2001||1||0:11||Las Vegas, Nevada, United States||UFC Lightweight title eliminator.|
|Win||2–0||Din Thomas||KO (knee and punches)||UFC 32||June 29, 2001||1||2:42||East Rutherford, New Jersey, United States|
|Win||1–0||Joey Gilbert||TKO (punches)||UFC 31||May 4, 2001||1||4:57||Atlantic City, New Jersey, United States|
Pay-per-view buy rates
|June 29, 2001||B.J. Penn vs. Din Thomas||UFC 32: Showdown in the Meadowlands||N/A||Co-main event.|
|November 2, 2001||B.J. Penn vs. Caol Uno||UFC 34: High Voltage||65,000||Main card.|
|January 11, 2002||Jens Pulver vs. B.J. Penn||UFC 35: Throwdown||35,000||Main event. First lightweight headlined UFC event.|
|May 15, 2002||B.J. Penn vs. Paul Creighton||UFC 37: High Impact||50,000||Main card.|
|September 27, 2002||B.J. Penn vs. Matt Serra||UFC 39: The Warriors Return||45,000||Main card.|
|February 28, 2003||Caol Uno vs. B.J. Penn II||UFC 41: Onslaught||60,000||Co-main event.|
|January 31, 2004||Matt Hughes vs. B.J. Penn||UFC 46: Supernatural||80,000||Co-main event.|
|March 4, 2006||B.J. Penn vs. Georges St-Pierre||UFC 58: USA vs. Canada||300,000||Co-main event.|
|September 23, 2006||Matt Hughes vs. B.J. Penn II||UFC 63: Hughes vs. Penn||400,000||Main event.|
|January 19, 2008||B.J. Penn vs. Joe Stevenson||UFC 80: Rapid Fire||225,000||Main event.|
|May 24, 2008||B.J. Penn vs. Sean Sherk||UFC 84: Ill Will||475,000||Main event.|
|January 31, 2009||Georges St-Pierre vs. B.J. Penn II||UFC 94: St-Pierre vs. Penn 2||920,000||Main event. Welterweight PPV record (surpassed by UFC 158).|
|August 8, 2009||B.J. Penn vs. Kenny Florian||UFC 101: Declaration||850,000||Main event. Lightweight PPV record.|
|December 12, 2009||B.J. Penn vs. Diego Sanchez||UFC 107: Penn vs. Sanchez||620,000||Main event.|
|April 10, 2010||B.J. Penn vs. Frankie Edgar||UFC 112: Invincible||500,000||Co-main event.|
|August 28, 2010||Frankie Edgar vs. B.J. Penn II||UFC 118: Edgar vs. Penn 2||570,000||Main event.|
|November 20, 2010||Matt Hughes vs. B.J. Penn III||UFC 123: Rampage vs. Machida||500,000||Co-main event.|
|February 27, 2011||B.J. Penn vs. Jon Fitch||UFC 127: Penn vs. Fitch||260,000||Main event.|
|October 29, 2011||B.J. Penn vs. Nick Diaz||UFC 137: Penn vs. Diaz||280,000||Main event.|
Film and television
|2007||The Ultimate Fighter 5||Himself||Head coach|
|2008||Renzo Gracie: Legacy||Himself|
|2009||BJ Penn: 90 Days||Himself|
|2010||Last Call with Carson Daly||Himself|
|2010||ESPN: Sport Science||Himself|
|2011||Hawaii Five-0||Kapu Member|
|2012||MMA Uncensored Live||Himself|
|2014||The Ultimate Fighter: Team Edgar vs. Team Penn||Himself||Head coach|
|2014||UFC Presents Mana: BJ Penn||Himself|
|2003||UFC: Tapout 2||Himself|
|2004||UFC: Sudden Impact||Himself|
|2009||UFC 2009 Undisputed||Himself|
|2010||UFC Undisputed 2010||Himself|
|2012||UFC Undisputed 3||Himself|
|2014||EA Sports UFC||Himself|
- BJ "The Prodigy" Penn – Official UFC® Fighter Profile. Ufc.com. Retrieved on October 30, 2011.
- "Fight Finder – B.J. "The Prodigy" Penn Mixed Martial Arts Statistics". Sherdog.com. Archived from the original on June 2, 2008. Retrieved February 10, 2009.
- BJ Penn – Biography and Profile of BJ Penn. Martialarts.about.com (December 12, 1978). Retrieved on 2011-10-30.
- http://bleacherreport.com/articles/419901-top-five-ufc-champions-of-all-time#/articles/419901-top-five-ufc-champions-of-all-time/page/2 Top 5 Greatest UFC Champions
- Rabey, Rabey (July 25, 2011). "Sean Sherk Wants Top Contender When He Returns". Addicted MMA.
- Rick, LaFitte. "UFC Great B.J. Penn Making Improbable Return at Featherweight For Frankie Edgar Trilogy". Rant Sports.
- "BJ Penn is ‘Absolutely a UFC Hall of Famer' says Dana White". Yahoo! Sports.
- "Nevada Court Rules Against Temporary Injunction Of Ufc Welterweight Title Match: Penn Attorney Sites Mediation Next, Trial A Last Resort". Full Contact Fighter.
- "Dana White on why Ronda Rousey will headline UFC 157: 'She's the champ'". MMAFighting.com. December 16, 2012.
- "Dana White: Tito Ortiz, BJ Penn Deserve to Be in UFC Hall of Fame". MMAFighting.com. December 16, 2012.
- "White: B.J. Penn is 'almost' on weight already ahead of featherweight debut". Bloodyelbow. October 21, 2013.
- "BJ Penn: The 10 Most Memorable Moments from the Career of the UFC 'Prodigy'". Bleacher Report. December 3, 2012.
- "BJ Penn". bjpenn.com. December 19, 2009. Retrieved October 17, 2010.
- "What is Tom Callos To BJ Penn?". Hawaiisportspage.com. Archived from the original on January 4, 2009. Retrieved February 10, 2009.
- Callos, Tom (February 10, 2009). "Genesis of "The Prodigy". Blackbeltmag.com.
- Hirth, James (July 28, 2005). "K-1 Hawaii Preview: Penn Versus Gracie". Sherdog.com. Retrieved February 10, 2009.
- "Biography". BJPenn.com. Archived from the original on August 12, 2007. Retrieved October 10, 2006.
- Chiappetta, Mike (February 13, 2008). "Focused BJ Penn ready to make history". NBCSports.com. Archived from the original on February 11, 2009. Retrieved February 18, 2009.
- "UFC 137 Results: 5 Significant Achievements from BJ Penn's Career". BleacherReport. October 30, 2011.
- Iole, Kevin (January 28, 2008). "Penn focused on nurturing talent, not wasting it". Yahoo! Sports. Archived from the original on January 31, 2009. Retrieved February 18, 2009.
- Sloan, Mike (June 26, 2007). "Penn avenges 2002 loss to Pulver". ESPN / Sherdog.com. Retrieved February 18, 2009.
- "BJ Penn vs Matt Hughes at UFC 46: Ultimate Submissions breaks down the grappling prowess of the 'Prodigy'". MMAMania.com.
- Cofield, Steve. "The best of the decade: 10 biggest MMA upsets". Yahoo Sports.
- "The 50 Best Submissions in the History of MMA". ComplexSports.
- Sloan, Mike (July 23, 2004). "BJ Penn Sues Zuffa Over Stripping of Welterweight Title". Sherdog.com. Retrieved October 9, 2012.
- "Penn beats Gracie and Goodridge wins at K-1 Hawaii". Mmaringreport.com. Archived from the original on January 11, 2009. Retrieved February 10, 2009.
- "大会結果詳細". Hero-s.com. Retrieved February 10, 2009.
- "Georges St-Pierre vs. BJ Penn I". Tapology.com. March 4, 2006.
- "B.J. Penn Claims Rib Injury Influenced Loss To Matt Hughes". Mmanews.Com. September 28, 2006. Retrieved February 10, 2009.
- "Exclusive Interview: The Ultimate Fighter 5 Coach, Jens Pulver on BJ Penn". Buddytv.com. June 22, 2007. Retrieved February 10, 2009.
- Iole, Kevin (June 23, 2007). "Pulverized". Ca.sports.yahoo.com. Retrieved February 10, 2009.
- Bilmes, Eugene (May 28, 2008). "Fighter Spotlight: BJ Penn". Mmastation.com. Retrieved February 10, 2009.
- Iole, Kevin (August 28, 2007). "There should be no room for Babalu's antics". Sports.yahoo.com. Retrieved February 10, 2009.
- Stupp, Dann (July 20, 2007). "UFC Lightweight Champ Sean Sherk Appealing Fine, Suspension". MMAjunkie.com. Archived from the original on January 6, 2009. Retrieved February 10, 2009.
- Iole, Kevin (November 2, 2007). "Sherk not stripped; Penn-Stevenson for interim title". Sports.yahoo.com. Retrieved February 10, 2009.
- Karkoski, Kris (December 8, 2007). "Sean Sherk Stripped of Lightweight Title". MMAFrenzy.com. Retrieved February 10, 2009.
- "MMA 411's live UFC 80 PPV Coverage: BJ Penn vs Joe Stevenson". 411mania.com. January 19, 2008. Retrieved February 10, 2009.
- Sherdog.com. "Sherdog’s Miscellaneous Awards for 2008". Sherdog.com. Retrieved August 27, 2010.
- Smith, Michael David (January 19, 2008). "UFC 80: B.J. Penn Beats Joe Stevenson, Wins Lightweight Championship in Bloody Battle". AOL Sports. Archived from the original on January 23, 2008. Retrieved January 21, 2008.
- "Penn calls for St. Pierre match". FanNation.com. May 28, 2008. Retrieved February 10, 2009.
- Perkins, Jason (July 2, 2008). "BJ Penn To Fight The Winner Of GSP vs. Jon Fitch". fightline.com. Retrieved July 2, 2008.[dead link]
- "Everything About the GSP – BJ Penn Rivalry". Myvideofight.com. Archived from the original on February 18, 2009. Retrieved February 10, 2009.
- Morgan, John (January 14, 2009). "B.J. Penn: I'm going to try to kill you, but it's nothing personal". MMAjunkie.com. Archived from the original on February 4, 2009. Retrieved February 10, 2009.
- "UFC 94 round by round updates". MMAJunkie.com. January 31, 2009. Retrieved July 2, 2009.
- "BJ Penn: I'm Still The Light Weight Champ. Let's Keep Fighting.". bjpenn.com. February 15, 2009. Retrieved February 19, 2009.[dead link]
- Chiappetta, Mike (February 4, 2009). "Penn asks commission to investigate St-Pierre". NBCSports.com. Archived from the original on February 7, 2009. Retrieved February 7, 2009.
- "NSAC Takes No Action at Greasegate Hearing". MMAFrenzy.com. March 17, 2009. Retrieved August 27, 2010.
- Gross, Josh (December 18, 2009). "MMA: Highlights and lowlights". SportsIllustrated.
- "GREG JACKSON RESPONDS TO DANA WHITE'S "GREASEGATE" ALLEGATIONS". MMAJunkie.com.
- Alexsander, Gary (February 11, 2009). "'Stitch' Duran breaks down GSP greasing allegations". AroundtheOctagon.com. Fighters Only Magazine. Archived from the original on February 13, 2009. Retrieved February 11, 2009.
- in his first post-fight interview on February 11, 2009."Transcript from BJ Penn interview from BJ Penn.com". aroundtheoctagon.com. February 11, 2009. Archived from the original on February 13, 2009. Retrieved February 11, 2009.
- Chiappetta, Mike (February 6, 2009). "St-Pierre responds to greasing allegations". NBCSports.com. Archived from the original on February 7, 2009. Retrieved February 7, 2009.
- "B.J. Penn accepts Georges St-Pierre's challenge for third meeting". Sports.yahoo.com. MMAjunkie.com. February 6, 2009. Archived from the original on February 12, 2009. Retrieved February 7, 2009.
- "Penn Files Formal Complaint with NSAC". MMAWeekly.com. March 11, 2009. Retrieved June 23, 2009.
- "B.J. Penn Files Formal Complaint Against Georges St Pierre". Bloody Elbow. March 11, 2009. Retrieved July 2, 2009.
- "BJ Penn vs. Diego Sanchez Now Slated for UFC 107 on December 12 in Memphis". MMAFrenzy.com. January 2, 2009. Retrieved September 3, 2009.
- Nelson, Jake. "BJ Penn: The Greatest Lightweight in the History of the Sport". ProFighting-fans.com.
- "Penn Dominates, Finishes Sanchez at UFC 107". sherdog.com. December 12, 2009.
- "Dana White proud of new BJ Penn". FiveKnuckles.com. Archived from the original on December 17, 2009. Retrieved December 13, 2009.
- "MMA Decisions - Edgar def. Penn:". mmadecisions.com. March 12, 2016.
- Leanza, Mike. "UFC 112: Frankie Edgar Shocks the World and BJ Penn, the Judges Do Too". BleacherReport.com.
- Ngo, Tom. "Frankie Edgar Beats BJ Penn to Capture Lightweight Title". 5thround.
- BJ Penn Signs Bout Agreement against Frank Edgar. Bloody Elbow. Retrieved on October 30, 2011.
- Hendricks, Maggie. (October 24, 2011) Edgar convincingly beats Penn in UFC 118 main event – Cagewriter – UFC Blog – Yahoo! Sports. Sports.yahoo.com. Retrieved on 2011-10-30.
- UFC 118: Edgar dominates Penn, Couture destroys Toney. Vancouversun.com (August 28, 2010). Retrieved on 2011-10-30.
- "TRILOGY: PENN VS. HUGHES 3 AT UFC 123". MMAWeekly.com. September 13, 2010.
- "'Rampage' Jackson wins thriller over Machida at UFC 123". The Vancouver Sun. November 20, 2010. Retrieved November 20, 2010.
- "UFC 123 Results: B.J. Penn Turns The Tide, Sinks Matt Hughes". MMAWeekly.com. November 21, 2010. Archived from the original on July 14, 2011. Retrieved July 25, 2011.
- "BJ Penn vs. Matt Hughes III". Tapology.com. Retrieved August 26, 2012.
- "UFC 123 in the Bag, B.J. Penn Faces Jon Fitch at UFC 127 Next". MMAWeekly.com. November 21, 2010.
-  Archived February 18, 2011, at the Wayback Machine.
- Floyd Mayweather Joins UFC: BJ Penn Shocker. Ringside Report (January 8, 2011). Retrieved on 2011-10-30.
- Nate, Kid. (July 11, 2011) UFC Apparently Nixes B.J. Penn vs. Jon Fitch Rematch, Penn to Face Carlos Condit?. Bloody Elbow. Retrieved on 2011-10-30.
- "Carlos Condit vs. B.J. Penn in the works for UFC 137 in Las Vegas". mmajunkie.com. July 15, 2011.
- "BJ Penn Moves Camp to California for UFC 137 Bout; Kendall Grove, Reagan Penn Join Him". MMAweekly.com. July 27, 2011.
- "Nick Diaz out, Carlos Condit in against Champ Georges St-Pierre at UFC 137". MMAJunkie.com. September 7, 2011. Retrieved September 7, 2011.
- "UFC 137 Results: B.J. Penn Retires After Loss to Nick Diaz". BloodyElbow.
- "UFC 137: BJ's Message to Fans". BJPenn.com. November 1, 2011. Retrieved November 1, 2011.
- "BJ Penn Tweets Hard At Nick Diaz, Jon Fitch, Manager says BJ is back". BJPenn.com. November 1, 2011. Retrieved January 5, 2012.
- "Dana White: BJ Penn, Tito Ortiz deserve to be in UFC Hall of Fame".
- "Ortiz, Penn both set for Hall of Fame induction".
- "B.J. Penn cuts UFC retirement short, accepts Rory MacDonald challenge".
- Mrosko, Gene (June 9, 2012). "BJ Penn vs Rory MacDonald fight booked for Sept. 22 in Toronto". mmamania.com. Retrieved June 9, 2012.
- Roth, Matthew (August 5, 2012). "UFC 152: Rory MacDonald Injured and out of B.J. Penn Fight". Bleacher Report. Retrieved August 5, 2012.
- "Rory MacDonald vs. B.J. Penn targeted for UFC on FOX 5 co-headliner". mmajunkie.com. August 10, 2012.
- "Video - B.J. Penn Torn Between Retiring and UFC Comeback". FightNetwork. July 11, 2013.
- Dave Doyle (September 11, 2013). "B.J. Penn, Frankie Edgar to coach The Ultimate Fighter 19, fight at featherweight". mmafighting.com.
- Staff (March 19, 2014). "Frankie Edgar-B.J. Penn headline TUF 19 Finale card July 6 in Las Vegas". mmajunkie.com. Retrieved March 19, 2014.
- "Andre Pederneiras: B.J. Penn will train with Jose Aldo for Frankie Edgar". MMAFighting.
- "BJ Penn Brings In Dominick Cruz In Prep For Edgar Bout". BJPenn.com.
- Staff (July 6, 2014). "Edgar destroys Penn in Ultimate Fighter finale". staradvertiser.com. Retrieved July 6, 2014.
- C.J. Tuttle (July 6, 2014). "B.J. Penn Retires After 3rd Straight Loss; ‘I Shouldn’t Have Been in the Ring Tonight’". sherdog.com. Retrieved July 6, 2014.
- "B.J. Penn has no answer again for Frankie Edgar, losing for a third time". The Globe and Mail.
- Staff (January 19, 2016). "Ex-champ B.J. Penn ends retirement, but UFC boss still unsure on details". mmajunkie.com. Retrieved January 19, 2016.
- Damon Martin (2016-02-08). "BJ Penn says his return has been pushed back to UFC 197 in April". foxsports.com. Retrieved 2016-02-08.
- MMA Fighting Newswire (2016-02-18). "UFC postpones BJ Penn's return amid allegations". mmafighting.com. Retrieved 2016-02-18.
- Staff (2016-04-12). "B.J. Penn vs. Dennis Siver slated for UFC 199 in Los Angeles". mmajunkie.com. Retrieved 2016-04-12.
- Jesse Holland (2016-05-11). "Dennis Siver injured, bounced from UFC 199 fight against BJ Penn". mmamania.com. Retrieved 2016-05-11.
- Tristen Critchfield (2016-05-11). "Cole Miller steps in to face B.J. Penn at UFC 199 in Los Angeles". sherdog.com. Retrieved 2016-05-11.
- Thomas Myers (2016-05-23). "BJ Penn flagged for possible anti-doping violation, pulled from UFC 199 fight with Cole Miller". mmamania.com. Retrieved 2016-05-23.
- Wickert, Mark (2004). "BJ PENN: The Day the Hawaiians Took Over". Knucklepit.com. Archived from the original on August 26, 2006. Retrieved August 23, 2006.
- Song, Jaymes (July 2008). "The Ultimate Fighter". KoreAm Journal. Archived from the original on January 7, 2009. Retrieved February 10, 2009.[dead link]
- "'Penn's pride in his heritage". ethnicelebs.com. January 2, 2010. Retrieved January 10, 2010.
- Morinaga, Dayton (November 23, 2008). "Penn writes new chapter in his life". Honolulu Advertiser. Archived from the original on December 3, 2008. Retrieved November 27, 2008.[dead link]
- "Penn's new baby".
- "Mixed Martial Arts: The Book of Knowledge Review". Lockflow.com. May 1, 2007. Archived from the original on December 27, 2007. Retrieved January 8, 2008.
- Hardcover Nonfiction – List. NYTimes.com. Retrieved on October 30, 2011.
- "Never Surrender (2009)". imdb.com. Retrieved November 18, 2009.
- "BJ Penn Comes Full Circle Against Frankie Edgar". BleacherReport.
- "UFC 137 Results: The Great, Disappointing Career of B.J. Penn". BloodyElbow.
- Becker, Dana. "Let Us Embrace The Legacy And Return Of BJ Penn". MMAConvert.
- "BJ Penn". BJJ Heroes.
- "BJ "The Prodigy" Penn". UFC.
- "UFC Gym in Hawaii Open for Enrollment". UFC.
- "Details about new UFC PPV intro". Mixedmartialarts.com.
- "BJ Penn: Tribute to the Greatest Lightweight of All Time". December 23, 2009.
- "Ranking the GOATS of Each Weight Division in MMA". December 23, 2009.
- "The 10 Best MMA Fighters of All Time, by Division". December 23, 2009.
- Gurevich, Anton. "170lbs of Gold: Five greatest Welterweights in UFC history". LowkickMMA.
- Fox, Jeff. "FIVE BEST WELTERWEIGHTS OF ALL-TIME". MMA Manifesto.
- "B.J. Penn's quest to regain lost stature steals 'Road to the Octagon' show". MMAFighting.
- "Breaking Down the Recipe for the Ideal UFC Superstar". BleacherReport.
- Gurevich, Anton. "Freddy Roach: BJ Penn, GSP and Anderson Silva are the TOP 3 Boxers in MMA". LowKickMMA.
- ""The Prodigy" BJ Penn". Tapology.
- "Anderson Silva Says BJ Penn is the Greatest Mixed Martial Artist of All Time". Yahoo! Sports.
- Chiappetta, Mike. "Who is MMA's best of all time? Anderson Silva says it's B.J. Penn". MMAFighting.
- Hall, Chris. "Anderson Silva calls B.J. Penn greatest fighter of all time". BloodyElbow.
- Mowatt, Kelsey. "Anderson Silva: BJ Penn is Greatest Fighter Ever". MMAFrenzy.
- "UFC Hall of Famer Mark Coleman joins B.J. Penn's coaching staff for The Ultimate Fighter 19". MMA Torch.
- "THE TOP 100 MMA FIGHTERS: NO. 04: BJ PENN". FighterOnly! Magazine.
- Shaun Al-Shatti (May 23, 2015). "B.J. Penn, Bas Rutten, Jeff Blatnick, Hughes-Trigg 2 inducted into UFC Hall of Fame". mmafighting.com. Retrieved May 23, 2015.
- Gross, Josh (December 16, 2009). "Fedor Emelianenko, Anderson Silva among MMA's best of decade". Sports Illustrated. Retrieved September 3, 2012.
- Martin, Todd. "UFC's Greatest Fights 10 of 10". Sports Illustrated. Retrieved September 3, 2012.
- Martin, Todd. "UFC's Greatest Fights 10 of 10". Sports Illustrated. Retrieved September 3, 2012.
- "MMA Fighting.com 2006 Year End Awards". MMAFighting.com. January 1, 2007. Retrieved May 5, 2012.
- "Fight Matrix Awards". FightMatrix.com. Retrieved September 3, 2012.
- "Fedor Emelianenko - Fighter of the Decade". FightMagazine.com. December 25, 2009.
- "2008 FIGHT! Magazine Awards". FightMagazine.com.
- "2009 FIGHT! Magazine Awards". FightMagazine.com.
- "MMA Awards of the Decade". December 23, 2009.
- Horwitz, Raymond. "BJ PENN INDUCTED INTO THE BLACKBELT HALL OF FAME". BlackBeltMag.com.
- Pusey, Trent (January 5, 2007). "2008 Inside Fights Awards". Eurosport. Retrieved September 5, 2012.
- Martin, Todd. "SHERDOG.COM'S MMA HALL OF FAME". Sherdog.com.
- Beatdown of the Year – Sherdog’s Miscellaneous Awards for 2008. Sherdog.com. Retrieved on October 30, 2011.
- Hernandez, Sergio. "History in the Making: B.J. Penn becomes the undisputed lightweight king at UFC 84". MMA Mania.
|Wikimedia Commons has media related to B.J. Penn.|
- Official website
- Professional MMA record for B.J. Penn from Sherdog
- UFC Profile
- BJJ Heroes BJ Penn Profile
- BJ Penn Quotes
|New title||Rumble on the Rock Lightweight Champion
October 10, 2003 – January 31, 2004
Penn signed with UFC
|UFC Welterweight Champion
January 31, 2004 – May 17, 2004
Penn signed with K-1
Title next held byMatt Hughes
Title last held bySean Sherk
|UFC Lightweight Champion
January 19, 2008 – April 10, 2010