| Res. | Record | Opponent | Method | Event | Date | Round | Time | Location | Notes |
| Loss | 16–10 | Randy Couture | Submission (rear-naked choke) | UFC 109 | February 6, 2010 | 2 | 1:09 | Las Vegas, Nevada, United States | First UFC Hall of Famer vs. UFC Hall of Famer bout in UFC history. |
| Win | 16–9 | Stephan Bonnar | Decision (unanimous) | UFC 100 | July 11, 2009 | 3 | 5:00 | Las Vegas, Nevada, United States | |
| Loss | 15–9 | Maurício Rua | TKO (punches) | UFC 93 | January 17, 2009 | 3 | 4:36 | Dublin, Ireland | Light Heavyweight debut. Fight of the Night. |
| Loss | 15–8 | Fedor Emelianenko | Submission (armbar) | PRIDE 32: The Real Deal | October 21, 2006 | 2 | 1:15 | Las Vegas, Nevada, United States | |
| Win | 15–7 | Maurício Rua | TKO (broken arm) | Pride 31 - Dreamers | February 26, 2006 | 1 | 0:49 | Saitama, Saitama, Japan | |
| Win | 14–7 | Milco Voorn | Submission (arm-triangle choke) | Bushido Europe: Rotterdam Rumble | October 9, 2005 | 1 | 0:56 | Rotterdam, South Holland, Netherlands | |
| Loss | 13–7 | Mirko Cro Cop | KO (punches and soccer kick) | PRIDE 29 | February 20, 2005 | 1 | 3:40 | Saitama, Saitama, Japan | |
| Loss | 13–6 | Fedor Emelianenko | Submission (armbar) | PRIDE Total Elimination 2004 | April 25, 2004 | 1 | 2:11 | Saitama, Saitama, Japan | Pride FC 2004 Heavyweight Grand Prix Opening Round. |
| Win | 13–5 | Don Frye | Decision (unanimous) | PRIDE 26 | June 8, 2003 | 3 | 5:00 | Yokohama, Kanagawa, Japan | |
| Loss | 12–5 | Antônio Rodrigo Nogueira | Submission (triangle armbar) | PRIDE 16 | September 24, 2001 | 1 | 6:10 | Osaka, Osaka, Japan | |
| Win | 12–4 | Allan Goes | KO (knees) | PRIDE 13: Collision Course | March 25, 2001 | 1 | 1:19 | Saitama, Saitama, Japan | |
| Win | 11–4 | Igor Vovchanchyn | TKO (submission to knees) | PRIDE Grand Prix 2000 Finals | May 1, 2000 | 2 | 3:09 | Tokyo, Japan | Won the Pride FC 2000 Openweight Grand Prix Tournament. |
| Win | 10–4 | Kazuyuki Fujita | TKO (corner stoppage) | 1 | 0:02 | PRIDE FC 2000 Openweight Grand Prix Semifinal. |
| Win | 9–4 | Akira Shoji | Decision (unanimous) | 1 | 15:00 | PRIDE FC 2000 Openweight Grand Prix Quarterfinal. |
| Win | 8–4 | Masaaki Satake | Submission (can opener) | PRIDE Grand Prix 2000 Opening Round | January 30, 2000 | 1 | 1:14 | Tokyo, Japan | PRIDE FC 2000 Openweight Grand Prix Opening Round. |
| Win | 7–4 | Ricardo Morais | Decision (unanimous) | PRIDE 8 | November 21, 1999 | 2 | 10:00 | Tokyo, Japan | |
| Loss | 6–4 | Nobuhiko Takada | Submission (heel hook) | PRIDE 5 | April 29, 1999 | 2 | 1:44 | Nagoya, Aichi, Japan | |
| Loss | 6–3 | Pedro Rizzo | Decision (split) | UFC 18 | January 8, 1999 | 1 | 15:00 | New Orleans, Louisiana, United States | |
| Loss | 6–2 | Pete Williams | KO (head kick) | UFC 17 | May 15, 1998 | 1 | 12:38 | Mobile, Alabama, United States | |
| Loss | 6–1 | Maurice Smith | Decision (unanimous) | UFC 14 | July 27, 1997 | 1 | 21:00 | Birmingham, Alabama, United States | Lost the UFC Heavyweight Championship. Fight of the Year (1997). |
| Win | 6–0 | Dan Severn | Submission (scarf-hold) | UFC 12 | February 7, 1997 | 1 | 2:57 | Dothan, Alabama, United States | Won the inaugural UFC Heavyweight Championship and unified it with the UFC Superfight Championship. |
| Win | 5–0 | Brian Johnston | TKO (submission to punches) | UFC 11 | September 20, 1996 | 1 | 2:20 | Augusta, Georgia, United States | Won the UFC 11 Tournament. |
| Win | 4–0 | Julian Sanchez | Submission (scarf hold) | 1 | 0:45 | UFC 11 Tournament Quarterfinals. |
| Win | 3–0 | Don Frye | TKO (headbutts) | UFC 10 | July 12, 1996 | 1 | 11:34 | Birmingham, Alabama, United States | Won the UFC 10 Tournament. |
| Win | 2–0 | Gary Goodridge | Submission (exhaustion) | 1 | 7:00 | UFC 10 Tournament Semifinals. |
| Win | 1–0 | Moti Horenstein | TKO (submission to punches) | 1 | 2:43 | UFC 10 Tournament Quarterfinals. |