|UFC 84: Ill Will|
|Promotion||Ultimate Fighting Championship|
|Date||May 24, 2008|
|Venue||MGM Grand Garden Arena|
|City||Las Vegas, Nevada|
|Attendance||14,773 (13,448 paid)|
This event also marked the last appearance of Tito Ortiz in the UFC for well over a year, as he was at the end of his contract and due to his feud with Dana White was not expected to re-sign at the time.
This event also marked the UFC debut of future UFC Interim Heavyweight Champion Shane Carwin.
This event was awarded Sherdog's 2008 Event of the Year.
|Main card (PPV)|
|Lightweight||B.J. Penn (c)||def.||Sean Sherk||TKO (flying knee and punches)||3||5:00||[a]|
|Light Heavyweight||Wanderlei Silva||def.||Keith Jardine||KO (punches)||1||0:36|
|Light Heavyweight||Goran Reljic||def.||Wilson Gouveia||TKO (punches)||2||3:15|
|Light Heavyweight||Lyoto Machida||def.||Tito Ortiz||Decision (unanimous) (30–27, 30–27, 30–27)||3||5:00|
|Light Heavyweight||Thiago Silva||def.||Antonio Mendes||Submission (strikes)||1||2:24|
|Middleweight||Rousimar Palhares||def.||Ivan Salaverry||Submission (armbar)||1||2:36|
|Light Heavyweight||Rameau Thierry Sokoudjou||def.||Kazuhiro Nakamura||TKO (leg injury)||1||5:00|
|Lightweight||Rich Clementi||def.||Terry Etim||Decision (unanimous) (29–28, 29–28, 29–28)||3||5:00|
|Welterweight||Yoshiyuki Yoshida||def.||Jon Koppenhaver||Technical Submission (anaconda choke)||1||0:56|
|Welterweight||Dong Hyun Kim||def.||Jason Tan||TKO (elbows)||3||0:25|
|Heavyweight||Shane Carwin||def.||Christian Wellisch||TKO (punch)||1||0:44|
- For the UFC Lightweight Championship.
At the end of this event, the UFC awarded $75,000 to each of the fighters who received one of these three awards.
- Fight of the Night: Wilson Gouveia vs. Goran Reljic
- Knockout of the Night: Wanderlei Silva
- Submission of the Night: Rousimar Palhares
B.J. Penn ($250,000) def. Sean Sherk ($35,000)
Wanderlei Silva ($150,000) def. Keith Jardine ($10,000)
Lyoto Machida ($100,000) def. Tito Ortiz ($210,000)
Goran Reljic ($6,000) def. Wilson Gouveia ($18,000)
Sokoudjou ($80,000) def. Kazuhiro Nakamura ($20,000)
Thiago Silva ($50,000) def. Antonio Mendes ($4,000)
Rousimar Palhares ($10,000) def. Ivan Salaverry ($20,000)
Yoshiyuki Yoshida ($12,000) def. Jon Koppenhaver ($8,000)
Rich Clementi ($40,000) def. Terry Etim ($10,000)
Dong Hyun Kim ($40,000) def. Jason Tan ($3,000)
Shane Carwin ($12,000) def. Christian Wellisch ($10,000)
This does not include fighter bonuses
Total: $1,098,000 
- MMAWeekly.com staff (2008-05-31). "UFC 84 OFFICIAL GATE AND ATTENDANCE TOTALS". MMAWeekly.com. Retrieved 2008-05-31.
- "UFC 84 Fight Card". ufc.com. February 26, 2008. Retrieved 2008-02-26.
- Gross, Jeff (July 19, 2007). "UFC 155 lb (70 kg). Champion, Challenger Positive for Steroids". Sherdog. Retrieved August 9, 2008.
- "Silva, Palhares, Reljic and Gouveia secure $75K UFC 84 bonuses". MMAJunkie.com. May 25, 2008. Retrieved 2008-05-25.
- UFC 84 fighters' salaries: payroll tops a million bucks | MMAjunkie.com