Boxing in the 1980s was filled with important fights, events and personalities that shaped the sport. Boxing in the 1980s was shaped by many different situations, such as the continuous corporate battles between the different world sanctioning organizations, the void left by Muhammad Ali as the sport's ambassador and consequent search for a new boxing hero, the continuous presence of Don King as the sport's most famous promoter, the surge of rival promoters as Bob Arum, Butch Lewis and Murad Muhammad, and major rule changes. In 1986, Mike Tyson crowned himself world Heavyweight champion, and he was considered by many to be the savior of the Heavyweight division, which had seen a decline in champion quality level (particularly in the WBA side) after Ali's retirement and, later on, after longtime WBC ruler Larry Holmes' prime. In addition, the IBF and WBO began operating.
Another important aspect of boxing in the 1980s was the rivalry between five world champions: Wilfred Benítez, Roberto Durán, Marvin Hagler, Thomas Hearns and Sugar Ray Leonard. Of all the possible match-ups between these five, Benitez-Hagler was the only one that never happened. The circle of fights between these five gladiators actually began on November 30, 1979, when Leonard beat Benitez by knockout in round fifteen to win the WBC world Welterweight title, on the same night Hagler drew (tied) with Vito Antuofermo in his first bid to become the world's Middleweight champion.
September 27- Marvin Hagler becomes world Middleweight champion, knocking out Alan Minter in three rounds in London. The boxers then have to be protected by police from rioting Minter fans.
October 2- Larry Holmes retains his WBC world Heavyweight crown with an eleventh round technical knockout over Muhammad Ali. This fight is seen by many as one of the most despicable events in the history of the sport: Ali had been in a hospital for treatment for a good portion of the months before the fight, and it has been alleged that Don King made him fight for Ali to pay King the hospital bills King had gotten from Ali's stay at the hospital.
November 25- The No Más Fight, Sugar Ray Leonard regains his WBC world Welterweight title with an eighth round knockout of Roberto Durán, who quit inexplicably, leading to many rumors.
September 16- A much anticipated bout takes place, and Sugar Ray Leonard unifies his WBC world Welterweight title with the WBA one by knocking out the WBA's champion Thomas Hearns in round fourteen at Las Vegas.
January 24- Eusebio Pedroza retains his WBA world Featherweight title with a fifteen round unanimous decision over Juan Laporte in Atlantic City. The fight proves controversial: many observers thought they had seen Pedroza commit a large amount of infractions which, in their opinion, could have led to points deductions or disqualification.
June 11- After one of the most racially charged fight promotions in history, Larry Holmes retains his WBC world Heavyweight title with a thirteen round knockout over the fighter dubbed as the White Hope, Gerry Cooney, in Las Vegas (see: Larry Holmes vs. Gerry Cooney).
November 13- Tragedy in the ring: Ray Mancini retains his WBA world Lightweight title by knockout in round fourteen in Las Vegas over Duk Koo Kim, who passes away five days later, leading to the instituting of twelve rounds at the most as the mandatory fight distance and mandatory eight counts quickly. It was also the last fight to air as part of strike replacement programming on CBS because of the NFL strike, which ended three days later.
November 26- Larry Holmes retains his WBC world Heavyweight title with a fifteen round unanimous decision over Randall "Tex" Cobb, fight after which Howard Cosell quits as a boxing commentator, disgusted by what he described as mismatches.
January 31- In the first world title fight scheduled for twelve rounds instead of fifteen in various decades, Rafael Orono retains his WBC world Jr. Bantamweight championship with a four round knockout over Pedro Romero in Caracas, Venezuela.
March- the IBF surges, becoming boxing's third world sanctioning body.
June 16- On his 32nd. birthday, Roberto Durán becomes the seventh fighter in history to be a three division world champion, knocking out WBA Jr. Middleweight champion Davey Moore in eight rounds at New York.
August 7- Héctor Camacho wins his first of several world titles, knocking out Rafael Limón in five rounds to win the vacant WBC Jr. Lightweight title in San Juan.
September 1- Tragedy strikes again: Alberto Davila wins the vacant WBC world Bantamweight championship with a twelve round knockout over Kiko Bejines, who dies three days later.
September 9- Aaron Pryor retains his WBA world Jr. Welterweight title with a tenth round knockout over Alexis Argüello, who once again was attempting to become the first man to win world titles in four different divisions, in Las Vegas. Both men announce their retirements after their rematch.
September 23- Gerrie Coetzee of South Africa becomes the first African world Heavyweight champion in history, and the first White man to win the world Heavyweight title in twenty years, when he defeats Michael Dokes for the WBA championship with a ten round knockout in Akron.
November 10- Marvin Hagler retains his world Middleweight title with a fifteen round unanimous decision over Roberto Durán in Las Vegas. Duran was also attempting to become the first four division world champion in history.
December 13- The IBF's first world title fight, as Marvin Camel becomes world Cruiserweight champion for the second time, knocking out Roddy McDonald in five rounds for the IBF's vacant title, in Halifax, Nova Scotia Canada.
June 15- Thomas Hearns retains his WBC world Jr. Middleweight title with a second round knockout over Roberto Durán, who had been forced by the WBA to leave his WBA championship vacant before the fight, in Las Vegas.
March 6- Future Heavyweight champion Mike Tyson turns pro at 18 years of age.He knocked out Puerto Rican Hector Mercedez in the first round to win his first professional fight.
April 15- The War, Marvin Hagler retains his undisputed world Middleweight championship with a three round knockout over Thomas Hearns in Las Vegas. Round one of their fight is considered the greatest round in history by many.
September 21- Michael Spinks makes history by becoming the first boxer to go from world Light-Heavyweight champion to world Heavyweight champion, defeating IBF ruler Larry Holmes by a fifteen round unanimous decision in Las Vegas. Julio César Chávez dedicates his successful defense of his WBC world Jr. Lightweight title over Dwight Pratchett in the same boxing card, to the victims of the Mexico City earthquake of September 19th.
December 6- Donald Curry unifies his WBA world Welterweight title with the WBC championship, with a two round knockout win over WBC world champ Milton McCrory in Las Vegas.
January 17- Tim Witherspoon defeats Tony Tubbs by a fifteen round decision in Atlanta, to win the WBA world Heavyweight title and become only the third boxer, after Floyd Patterson and Muhammad Ali, to become two-time world Heavyweight champions. Witherspoon-Tubbs begins Don King's Heavyweight tournament that aims to have one universally recognized world champion at the end.
March 22- James Shuler dies only twelve days after fighting Thomas Hearns, in a motorcycle accident, in Pennsylvania.
March 22- In the continuation of Don King's Heavyweight tournament, Trevor Berbick wins the WBC world title with a twelve round decision over Pinklon Thomas at Las Vegas. In the same boxing card, Carlos De León becomes the first man to be three times Cruiserweight world champion, defeating the WBC world champion Bernard Benton by decision.
April 19- Michael Spinks retains his IBF world Heavyweight title by a fifteen round split decision over Larry Holmes in their Las Vegas rematch, to continue Don King's Heavyweight tournament.
June 23- The Triple Header: Thomas Hearns retains his WBC world Jr. Middleweight title with an eighth round knockout win against former world champion Mark Medal, Roberto Durán loses a ten round decision to Marvin Hagler's half brother Robbie Sims, and Barry McGuigan loses his WBA world Featherweight title on a fifteen round unanimous decision to Stevie Cruz.
July 19- The fourth installment of Don King's Heavyweight tournament as Tim Witherspoon retains his WBA world title with an eleventh round knockout of Frank Bruno in London.
September 6- Don King's Heavyweight tournament continues as Michael Spinks defeats Steffen Tangstad by a knockout in round four to retain his IBF belt, in Las Vegas.
November 22- In the words of HBO Boxing commentator, Barry Tompkins, And we have a new era in Boxing, when Mike Tyson becomes the youngest world Heavyweight champion in history, beating Trevor Berbick by knockout in round two to take the WBC world championship as Don King's Heavyweight tournament continues in Las Vegas.
December 12- In the next chapter of Don King's Heavyweight tournament, James Smith becomes WBA world Heavyweight champion, defeating Tim Witherspoon by knockout in round one, in New York.
April 6- In what is considered by many to be the greatest comeback in boxing history, Sugar Ray Leonard comes back after three and a half years without fighting to outpoint Marvin Hagler and win the undisputed world Middleweight championship in Las Vegas. Leonard becomes the tenth boxer in history to be world champion in three different divisions.
October 28- Jorge Vaca dethrones WBC world Welterweight champion Lloyd Honeyghan with a controversial eighth round technical decision in London. The controversy was that a point deducted to Honeyghan by the referee that night proved to be the margin of difference.
October 29- Thomas Hearns makes history, becoming the first boxer in history to win world titles at four different divisions, knocking out Juan Roldán in four rounds for the WBA's vacant world Middleweight title in Las Vegas.
March 7- Jeff Fenech becomes the eleventh boxer to win world titles in three different divisions, knocking out former world champion Victor Callejas in ten rounds at Sydney, Australia, for the vacant WBC world Featherweight title.
March 29- Lloyd Honeyghan recovers the WBC world Welterweight championship with a third round knockout of Jorge Vaca in their rematch at London.
July 29- In an extremely controversial bout, Colombia's Tomas Molinares becomes WBA world Welterweight champion by knocking out Marlon Starling in six rounds in Atlantic City. Starling's camp protested that the knockout punch had landed after the bell to end the round, therefore, it shouldn't have counted. After further review, the WBA agreed with Starling's camp, but decided not to withdraw recognition from Molinares as world champion.
August 4- The last fifteen rounds bout, as Jorge Páez defeats Calvin Grove by a majority decision to become the IBF's world Featherweight champion.
October 29- Julio César Chávez unifies his WBA world Lightweight title with the WBC one, beating his friend and neighbor, José Luis Ramírez, by a technical decision in round eleven in Las Vegas.
November 7- The first fight involving titles in two different categories and the world Super Middleweight championship sees Sugar Ray Leonard become boxing's second four division world champion and its first five division world champion when he knocks out WBC world Light Heavyweight champion Donnie Lalonde in the ninth round, also winning the WBC's vacant Super Middleweight championship, at Las Vegas.
February 24 - Roberto Durán makes history by becoming the third fighter to win world titles in four different divisions and also the fighter with the longest period between his first and latest world championships (17 years) when he defeats Iran Barkley by a split decision to become the WBC's world Middleweight champion, in Atlantic City.
February 25- Mike Tyson retains his undisputed world Heavyweight championship, with a fifth round knockout over future world champion Frank Bruno in Las Vegas.
March 6- The WBO's first world championship bout, as Héctor Camacho defeats Ray Mancini by unanimous twelve round decision, to win the WBO's vacant world Jr. Welterweight title and become boxing's twelfth world champion in three different divisions, at Las Vegas.
May 13- Julio César Chávez becomes the thirteenth boxer to win world titles in three or more different categories, knocking out Roger Mayweather in ten rounds in their rematch, to win the WBC's world Jr. Welterweight title in Los Angeles.
May 17- Carlos De León becomes the first boxer to win the world Cruiserweight title four times (and also joins a handful of champions who have won world titles in one division that many times) when he knocks out Sammy Reeson in nine rounds in London, picking up the WBC belt that had been vacated by his former conqueror, Evander Holyfield, when Holyfield moved to the Heavyweight division.
December 7- The decade in boxing finishes almost where it started, as Sugar Ray Leonard defends his WBC world Super Middleweight title with a twelve round unanimous decision victory over Roberto Durán in their third encounter.