| Niederlage | 23-23-1 | Lyubomir Simeonov  | TKO (punches) | | MAXFIGHT XVIII - Sofia Grand Prix | Dec 17, 2010 | 1 | 3:01 | Sofia, Bulgaria |
| Niederlage | 23-22-1 | Pedro Rizzo  | TKO (doctor stoppage) | | Washington Combat: Battle of the Legends | May 15, 2010 | 2 | 5:00 | Washington D.C. United States  |
| Niederlage | 23-21-1 | Gegard Mousasi  | TKO (punches) |  | K-1 - Dynamite!! Power of Courage 2009 | Dec 31, 2009 | 1 | 1:34 | Saitama, Japan  |
| Niederlage | 23-20-1 | Gabor Nemeth | TKO (corner stoppage) | | Super GP | Nov 22, 2008 | 2 | 3:45 | Budapest, Hungary  |
| Niederlage | 23-19-1 | Alistair Overeem | Submission (kimura) | | Ultimate Glory 10: The Battle of Arnhem | Nov 09, 2008 | 1 | 1:47 | Arnhem, Netherlands |
| Niederlage | 23-18-1 | Paul Buentello | Decision (unanimous) | | Affliction: Banned | Jul 19, 2008 | 3 | 5:00 | Anaheim, United States |
| Niederlage | 23-17-1 | Terroll Dees | Decision (unanimous) | | Iroquois MMA Championships 4 | Jun 21, 2008 | 3 | 5:00 | Ontario, Canada  |
| Niederlage | 23-16-1 | Mu Bae Choi  | KO (punch) | | The Khan 1 | Mar 30, 2008 | 2 | N/A | Seoul, South Korea |
| Sieg | 23-15-1 | Jan Nortje | TKO (punches) | | Hero's 8 | Mar 12, 2007 | 1 | 3:00 | Nagoya, Japan |
| Sieg | 22-15-1 | Tadas Rimkevicius  | TKO (Punches) 2006 | | K-1 - Hero's Lithuania | Nov 11, 2006 | 1 | 4:31 | Vilnius, Lithuania |
| Niederlage | 21-15-1 | Heath Herring | TKO (punches) |  | Hero's 4 | Mar 15, 2006 | 2 | 1:55 | Tokyo, Japan |
| Sieg | 21-14-1 | Alan Karaev  | Submission (forearm choke) |  | Hero's 1 | Mar 26, 2005 | 1 | 2:58 | Saitama, Saitama, Japan |
| Sieg | 20-14-1 | Sylvester Terkay | TKO (punches) | | K-1 MMA ROMANEX | May 22, 2004 | 1 | 1:22 | Saitama, Saitama, Japan |
| Sieg | 19-14-1 | Don Frye | KO (head kick) |  | PRIDE Shockwave 2003 | Dec 31, 2003 | 1 | 0:39 | Saitama, Saitama, Japan |
| Sieg | 18-14-1 | Dan Bobish | TKO (punches) | | PRIDE Final Conflict 2003 | Nov 09, 2003 | 1 | 0:18 | Tokyo, Japan |
| Niederlage | 17-14-1 | Fedor Emelianenko | TKO (soccer kicks and punches) |  | Pride Total Elimination 2003 | Aug 10, 2003 | 1 | 1:09 | Saitama, Saitama, Japan |
| Sieg | 17-13-1 | Lloyd van Dams | TKO (punches) | | PRIDE Shockwave 2002 | Aug 28, 2002 | 1 | 3:39 | Tokyo, Japan |
| Sieg | 16-13-1 | Achmed Labasanov | Decision (split) | | PRIDE 21 | Jun 23, 2002 | 3 | 5:00 | Saitama, Saitama, Japan |
| Unentschieden | 15-13-1 | Ebenezer Fontes Braga | Draw | | Inoki Bom-Ba-Ye 2001 | Dec 31, 2001 | 5 | 3:00 | Saitama, Saitama, Japan |
| Sieg | 15-13 | Yoshiaki Yatsu | TKO (corner stoppage) | | PRIDE 16 | Sep 24, 2001 | 1 | 3:03 | Osaka, Japan |
| Sieg | 14-13 | Jan Nortje | Submission (armbar) | | K-1 Andy Memorial 2001 Japan GP Final | Aug 19, 2001 | 1 | 1:11 | Saitama, Saitama, Japan |
| Niederlage | 13-13 | Antonio Rodrigo Nogueira | Submission (triangle choke) | | Pride 15 | Jul 29, 2001 | 1 | 2:37 | Saitama, Saitama, Japan |
| Sieg | 13-12 | Valentijn Overeem | Submission (strikes) | | Pride 14 | May 27, 2001 | 1 | 2:39 | Yokohama, Japan |
| Sieg | 12-12 | Bob Schrijber | Submission (kneebar) | | 2 Hot 2 Handle 2 | Mar 18, 2001 | 1 | 2:32 | Rotterdam, the Netherlands |
| Sieg | 11-12 | Yoshiaki Yatsu | TKO (punches) | | Pride 11 - Battle of the Rising Sun | Oct 31, 2000 | 1 | 8:58 | Osaka, Japan |
| Niederlage | 10-12 | Gilbert Yvel | KO (head kick) | | Pride 10 - Return of the Warriors 2000 | Aug 27, 2000 | 1 | 0:28 | Tokorozawa, Saitama, Japan |
| Niederlage | 10-11 | Ricco Rodriguez | Decision (unanimous) | | Pride 9 | Jun 04, 2000 | 2 | 10:00 | Nagoya, Japan |
| Niederlage | 10-10 | Igor Vovchanchyn  | TKO (punches) | | Pride FC - Pride Grand Prix 2000: Finals | May 01, 2000 | 1 | 10:14 | Tokyo, Japan |
| Sieg | 10-9 | Osamu Kawahara | Submission (forearm choke) | | PRIDE Grand Prix 2000 Opening Round | Jan 30, 2000 | 1 | 0:51 | Tokyo, Japan |
| Niederlage | 9-9 | Tom Erikson | Decision (unanimous) | | PRIDE 8 | Nov 21, 1999 | 2 | 10:00 | Tokyo, Japan |
| Niederlage | 9-8 | Naoya Ogawa | Submission (americana) | | Pride 6 | Jul 04, 1999 | 2 | 0:36 | Yokohama, Japan |
| Sieg | 9-7 | Andre Roberts | Submission (punch) | | UFC 19 | Mar 05, 1999 | 1 | 0:43 | Bay St. Louis, Mississippi, United States |
| Niederlage | 8-7 | Igor Vovchanchyn | TKO (punches) | | Pride FC - Pride 4 | Oct 11, 1998 | 1 | 5:58 | Tokyo, Tokyo, Japan |
| Sieg | 8-6 | Amir Rahnavardi | TKO (punches) | | PRIDE 3 | Jun 24, 1998 | 1 | 7:22 | Tokyo, Japan |
| Niederlage | 7-6 | Marco Ruas | Submission (heel hook) | | PRIDE 2 | Mar 15, 1998 | 1 | 9:09 | Yokohama, Japan |
| Sieg | 7-5 | Oleg Taktarov | KO (punch) | | Pride 1 | Oct 11, 1997 | 1 | 4:57 | Tokyo, Japan, Japan |
| Sieg | 6-5 | Cal Worsham | Submission (americana) | | International Vale Tudo Championship 1 | Jul 06, 1997 | 1 | 0:43 | Brazil |
| Sieg | 5-5 | Pedro Otavio | Submission (punches) | | International Vale Tudo Championship 1 | Jul 06, 1997 | 1 | 16:15 | Brazil |
| Sieg | 4-5 | Augusto Menezes Santos | Submission (reverse full-nelson) | | International Vale Tudo Championship 1 | Jul 06, 1997 | 1 | 0:32 | Brazil |
| Niederlage | 3-5 | Mario Neto | Submission (fatigue) | | Universal Vale Tudo Fighting 6 | Mar 03, 1997 | 1 | 6:02 | Brazil |
| Niederlage | 3-4 | Don Frye | Submission (fatigue) | | Ultimate Ultimate 1996 | Dec 07, 1996 | 1 | 11:19 | Birmingham, Alabama, United States |
| Sieg | 3-3 | John Campetella | KO (punches) | | UFC 10 | Jul 12, 1996 | 1 | 1:28 | Birmingham, Alabama, United States |
| Niederlage | 2-3 | Mark Coleman | Submission (exhaustion) | | UFC 10 | Jul 12, 1996 | 1 | 7:00 | Birmingham, Alabama, U.S. |
| Niederlage | 2-2 | Mark Schultz | TKO (cut) | | UFC 9 | May 17, 1996 | 1 | 12:00 | Detroit, Michigan, United States |
| Niederlage | 2-1 | Don Frye | Submission (strikes) | | UFC 8 | Feb 16, 1996 | 1 | 2:14 | San Juan, Puerto Rico  |
| Sieg | 2-0 | Jerry Bohlander | TKO (punches) | | UFC 8 | Feb 16, 1996 | 1 | 5:31 | San Juan, Puerto Rico |
| Sieg | 1-0 | Paul Herrera | TKO (elbows) | | UFC 8 | Feb 16, 1996 | 1 | 0:13 | San Juan, Puerto Rico |
