| Sieg | 32-13-3 | Kazushi Sakuraba  | Decision (unanimous) |  | Dynamite!! 2008 | Dec 31, 2008 | 2 | 5:00 | Saitama, Japan |
| Sieg | 31-13-3 | Masakatsu Funaki | TKO (punches) |  | Dream 2: Middleweight Grand Prix 2008 First Round | Apr 29, 2008 | 1 | 0:57 | Saitama, Japan |
| Sieg | 30-13-3 | Hideo Tokoro | Submission (straight armbar) |  | K-1 Premium 2007 Dynamite!! | Dec 31, 2007 | 3 | 3:08 | Osaka, Japan |
| Niederlage | 29-13-3 | Taiei Kin | Decision (unanimous) | | Hero's 9 | Jul 16, 2007 | 2 | 5:00 | Yokohama, Japan |
| Sieg | 29-12-3 | Ikuhisa Minowa | KO (soccer kicks) |  | Pride FC - Shockwave 2006 | Dec 31, 2006 | 1 | 1:18 | Saitama, Japan |
| Niederlage | 28-12-3 | Antonio Rodrigo Nogueira  | Submission (armbar) |  | Pride 31 | Feb 26, 2006 | 1 | 2:28 | Saitama, Saitama, Japan |
| Sieg | 28-11-3 | Makoto Takimoto | Decision (unanimous) |  | PRIDE Critical Countdown 2005 | Jun 26, 2005 | 3 | 5:00 | Saitama, Saitama, Japan |
| Sieg | 27-11-3 | Aliev Makhmud | TKO (retirement) |  | PRIDE 29 | Feb 20, 2005 | 1 | 7:09 | Saitama, Saitama, Japan |
| Sieg | 26-11-3 | Rony Sefo  | Submission (armbar) |  | PRIDE Shockwave 2003 | Dec 31, 2003 | 1 | 2:20 | Saitama, Saitama, Japan |
| Niederlage | 25-11-3 | Hidehiko Yoshida | Submission (ezekiel choke) |  | PRIDE Total Elimination 2003 | Aug 10, 2003 | 1 | 5:06 | Saitama, Japan |
| Sieg | 25-10-3 | Nobuhiko Takada | KO (punch) |  | PRIDE 23 | Nov 24, 2002 | 2 | 1:00 | Tokyo, Japan |
| Sieg | 24-10-3 | Ikuhisa Minowa | Decision (unanimous) |  | DEEP: 6th Impact | Sep 07, 2002 | 3 | 5:00 | Tokyo, Japan |
| Niederlage | 23-10-3 | Bob Sapp  | TKO (punches) |  | Pride 21 | Jun 23, 2002 | 1 | 0:11 | Saitama, Japan |
| Niederlage | 23-9-3 | Wanderlei Silva | KO (punch) |  | Pride 19 | Feb 24, 2002 | 2 | 2:28 | Saitama, Saitama, Japan |
| Niederlage | 23-8-3 | Gustavo Machado | Decision (unanimous) | | Rings: World Title Series 1 | Apr 20, 2001 | 2 | 5:00 | Tokyo, Japan |
| Niederlage | 23-7-3 | Renato Sobral | Decision (majority) | | Fighting Network Rings: King of Kings 2000 Final | Feb 24, 2001 | 2 | 5:00 | Tokyo, Japan |
| Niederlage | 23-6-3 | Antonio Rodrigo Nogueira | Submission (armbar) | | Rings: King of Kings 2000 Block A | Oct 09, 2000 | 2 | 2:29 | Tokyo, Japan |
| Sieg | 23-5-3 | Zaza Tkeshelashvili  | Decision (unanimous) | | Rings: King of Kings 2000 Block A | Oct 09, 2000 | 2 | 5:00 | Tokyo, Japan |
| Sieg | 22-5-3 | Pat Miletich | Decision (majority) | | Rings: Millennium Combine 3 | Aug 23, 2000 | 2 | 5:00 | Osaka, Japan |
| Sieg | 21-5-3 | Jeremy Horn | Decision (unanimous) | | Colosseum 2000 | May 26, 2000 | 2 | 5:00 | Japan |
| Niederlage | 20-5-3 | Gilbert Yvel  | TKO (strikes) | | Rings: Millennium Combine 1 2000 | Apr 20, 2000 | 1 | 13:13 | Tokyo, Japan |
| Niederlage | 20-4-3 | Renato Sobral | Decision (majority) | | Fighting Network Rings: King of Kings 1999 Final | Feb 26, 2000 | 2 | 5:00 | Tokyo, Japan |
| Sieg | 20-3-3 | Renzo Gracie | Decision (unanimous) | | Rings: King of Kings 1999 Final | Feb 26, 2000 | 2 | 5:00 | Tokyo, Japan |
| Sieg | 19-3-3 | Borislav Jeliazkov | Submission (rear-naked choke) | | Rings: King of Kings 1999 Block B | Dec 22, 1999 | 2 | 1:17 | Osaka, Japan |
| Sieg | 18-3-3 | Dave Menne | Decision (unanimous) | | Rings: King of Kings 1999 Block B | Dec 22, 1999 | 2 | 5:00 | Osaka, Japan |
| Sieg | 17-3-3 | Joop Kasteel | Submission (armbar) | | Rings: Rise 5th | Aug 19, 1999 | 2 | 2:17 | Japan |
| Unentschieden | 16-3-3 | Yoshihisa Yamamoto | Draw | | Rings: Rise 4th | Jun 24, 1999 | 3 | 5:00 | Japan |
| Sieg | 16-3-2 | Tariel Bitsadze | Submission (rear-naked choke) | | Rings: Rise 3rd | May 22, 1999 | 1 | 9:19 | Japan |
| Unentschieden | 15-3-2 | Frank Shamrock | Draw | | Rings: Rise 2nd | Apr 23, 1999 | 1 | 20:00 | Japan |
| Sieg | 15-3-1 | Hiromitsu Kanehara | Submission (armbar) | | Rings: Rise 1st | Mar 20, 1999 | 3 | 0:14 | Japan |
| Sieg | 14-3-1 | Valentijn Overeem | Submission (kneebar) | | Rings: Fighting Integration II | Feb 21, 1999 | 1 | 6:39 | Japan |
| Sieg | 13-3-1 | Kenichi Yamamoto | TKO (strikes) | | Rings: World Mega Battle Tournament | Dec 23, 1998 | 2 | 1:26 | Japan |
| Unentschieden | 12-3-1 | Tsuyoshi Kohsaka | Draw | | Rings: Fourth Fighting Integration | Jun 27, 1998 | 1 | 30:00 | Tokyo, Japan |
| Niederlage | 12-3 | Tariel Bitsadze | TKO (strikes) | | Rings: Third Fighting Integration | May 29, 1998 | 1 | 3:39 | Tokyo, Japan |
| Sieg | 12-2 | Mikhail Ilyukhin  | Submission | | Rings: Battle Dimensions Tournament 1997 Final | Jan 21, 1998 | 1 | 18:12 | Tokyo, Japan |
| Sieg | 11-2 | Akira Maeda | KO (strikes) | | Rings: Battle Dimensions Tournament 1997 Final | Jan 21, 1998 | - | - | |
| Sieg | 10-2 | Joop Kasteel | KO (strikes) | | Rings: Battle Dimensions Tournament 1997 Final | Jan 21, 1998 | - | - | |
| Sieg | 9-2 | Hans Nijman | Submission (kimura) | | Rings - Mega Battle Tournament 1997 Semifinal 1 | Oct 25, 1997 | 1 | 10:34 | Japan |
| Sieg | 8-2 | Volk Han | Submission (armbar) | | Rings - Extension Fighting 7 | Sep 26, 1997 | 1 | 12:48 | Japan |
| Sieg | 7-2 | Tsuyoshi Kohsaka | Submission (toe hold) | | Rings - Extension Fighting 2 | Apr 22, 1997 | 1 | 13:57 | Japan |
| Sieg | 6-2 | Andre Mannaart | Submission (rear-naked choke) | | Rings Holland - The Final Challenge | Feb 02, 1997 | 1 | 2:11 | Amsterdam, North Holland, Netherlands |
| Niederlage | 5-2 | Volk Han | TKO (strikes) | | Rings - Budokan Hall 1997 | Jan 22, 1997 | - | N/A | |
| Niederlage | 5-1 | Volk Han | KO (strikes) | | Rings - Battle Dimensions Tournament 1996 Final | Jan 01, 1997 | - | N/A | |
| Sieg | 5-0 | Yoshihisa Yamamoto | KO (strikes) | | Rings - Battle Dimensions Tournament 1996 Final | Jan 01, 1997 | - | - | |
| Sieg | 4-0 | Mitsuya Nagai | KO (strikes) | | Rings - Battle Dimensions Tournament 1996 Final | Jan 01, 1997 | - | - | |
| Sieg | 3-0 | Mikhail Ilyukhin | Submission | | Rings: Battle Dimensions Tournament 1996 Opening Round | Oct 25, 1996 | 1 | 14:40 | Nagoya, Japan |
| Sieg | 2-0 | Maurice Smith | Submission (armbar) | | Rings - Maelstrom 6 | Aug 24, 1996 | 1 | 10:58 | Tokyo, Japan |
| Sieg | 1-0 | Patrick Smith | Submission (heel hook) | | K-1 Hercules | Dec 09, 1995 | 1 | 0:55 | Japan |
