| Niederlage | 23-10-2 | Nick Diaz  | TKO (punches) |  | Strikeforce: Shamrock vs. Diaz | Apr 11, 2009 | 2 | 3:57 | San Jose, United States |
| Niederlage | 23-9-2 | Cung Le  | TKO (broken arm) |  | Strikeforce: Shamrock vs Le | Mar 29, 2008 | 3 | 5:00 | California, United States |
| Sieg | 23-8-2 | Phil Baroni | Technical submission (rear-naked choke) |  | Strikeforce Shamrock vs. Baroni | Jun 22, 2007 | 2 | 4:00 | San Jose, California, United States |
| Niederlage | 22-8-2 | Renzo Gracie  | DQ (knees to downed opponent) |  | EliteXC Destiny | Feb 10, 2007 | 2 | 2:00 | Southaven, Mississippi, United States |
| Sieg | 22-7-2 | Cesar Gracie | KO (punches) |  | Strikeforce: Shamrock vs. Gracie | Mar 10, 2006 | 1 | 0:20 | San Jose, California, United States |
| Sieg | 21-7-2 | Bryan Pardoe | Submission (armbar) | | WEC 6: Return of a Legend | Mar 27, 2003 | 1 | 1:46 | Lemoore, California, United States |
| Sieg | 20-7-2 | Elvis Sinosic | Decision (split) |  | K-1 World Grand Prix 2000 | Dec 10, 2000 | 5 | 3:00 | Tokyo, Japan |
| Sieg | 19-7-2 | Tito Ortiz | Submission (punches) |  | UFC 22 | Sep 24, 1999 | 4 | 4:50 | Lake Charles, United States |
| Unentschieden | 18-7-2 | Kiyoshi Tamura  | Draw | | Rings: Rise 2nd | Apr 23, 1999 | 1 | 20:00 | Japan |
| Sieg | 18-7-1 | John Lober | Submission (punches) | | UFC Brazil | Oct 16, 1998 | 1 | 7:40 | Sao Paulo, Brazil |
| Sieg | 17-7-1 | Jeremy Horn | Submission (kneebar) |  | UFC 17 | May 15, 1998 | 1 | 16:28 | Mobile, Alabama, United States |
| Sieg | 16-7-1 | Igor Zinoviev  | KO (slam) |  | UFC 16 | Mar 13, 1998 | 1 | 0:22 | New Orleans, Louisiana, United States |
| Sieg | 15-7-1 | Kevin Jackson | Submission (armbar) | | UFC Japan | Dec 21, 1997 | 1 | 0:16 | Yokohama, Japan |
| Sieg | 14-7-1 | Enson Inoue | TKO (Punches) | | Vale Tudo Japan 1997 | Nov 29, 1997 | 2 | 7:17 | Tokyo, Japan |
| Sieg | 13-7-1 | Wes Gassaway | KO (punches) | | World Pankration Championships 1 | Oct 26, 1997 | 1 | 11:54 | Texas, United States |
| Sieg | 12-7-1 | Tsuyoshi Kohsaka | Decision (unanimous) | | Rings: Extension Fighting 7 | Sep 26, 1997 | 1 | 30:00 | Japan |
| Niederlage | 11-7-1 | John Lober | Technical Decision (split) | | SuperBrawl 3 | Jan 17, 1997 | 1 | 30:00 | Honolulu, United States |
| Niederlage | 11-6-1 | Kiuma Kunioku | Decision (unanimous) | | Pancrase: Truth 10 | Dec 15, 1996 | 1 | 20:00 | Tokyo, Japan |
| Niederlage | 11-5-1 | Yuki Kondo | KO (head kick) | | Pancrase: 1996 Anniversary Show | Sep 07, 1996 | 1 | 12:43 | Urayasu, Chiba, Japan |
| Sieg | 11-4-1 | Manabu Yamada | Submission (rear naked choke) | | Pancrase: 1996 Neo-Blood Tournament, Round 1 | Jul 22, 1996 | 1 | 12:44 | Tokyo, Japan |
| Niederlage | 10-4-1 | Bas Rutten  | TKO (doctor stoppage) | | Pancrase: Truth 5 | May 16, 1996 | 1 | 11:11 | Tokyo, Japan |
| Sieg | 10-3-1 | Osami Shibuya | Decision (unanimous) | | Pancrase: Truth 4 | Apr 08, 1996 | 1 | 15:00 | Tokyo, Japan |
| Sieg | 9-3-1 | Ryushi Yanagisawa | Decision (unanimous) | | Pancrase: Truth 2 | Mar 02, 1996 | 1 | 20:00 | Kobe, Japan |
| Sieg | 8-3-1 | Minoru Suzuki | Submission (kneebar) | | Pancrase: Truth 1 | Jan 28, 1996 | 1 | 22:53 | Yokohama, Japan |
| Sieg | 7-3-1 | Vernon White | Submission (achilles lock) | | Pancrase: Eyes of Beast 7 | Dec 14, 1995 | 1 | 5:23 | Sapporo, Japan |
| Sieg | 6-3-1 | Masakatsu Funaki | Submission (toehold) | | Pancrase: Eyes of Beast 6 | Nov 04, 1995 | 1 | 10:31 | Yokohama, Japan |
| Sieg | 5-3-1 | Takafumi Ito | Submission (rear-naked choke) | | Pancrase: 1995 Anniversary Show | Sep 01, 1995 | 1 | 7:23 | Tokyo, Japan |
| Niederlage | 4-3-1 | Bas Rutten | Decision (split) | | Pancrase: 1995 Neo-Blood Tournament Second Round | Jul 23, 1995 | 1 | 15:00 | Tokyo, Japan |
| Sieg | 4-2-1 | Takaku Fuke | Submission (rear-naked choke) | | Pancrase: Eyes of Beast 5 | Jun 13, 1995 | 1 | 8:16 | Sapporo, Hokkaido, Japan |
| Unentschieden | 3-2-1 | Allan Goes | Draw | | Pancrase: Eyes of Beast 4 | May 13, 1995 | 1 | 10:00 | Chiba, Chiba, Japan |
| Sieg | 3-2 | Minoru Suzuki | KO (punches) | | Pancrase: Eyes of Beast 3 | Apr 08, 1995 | 1 | 3:23 | Nagoya, Japan |
| Niederlage | 2-2 | Masakatsu Funaki | Submission (toehold) | | Pancrase: Eyes of Beast 2 | Mar 10, 1995 | 1 | 5:11 | Yokohama, Kanagawa, Japan |
| Sieg | 2-1 | Katsuomi Inagaki | Submission (armbar) | | Pancrase: Eyes of Beast 1 | Jan 26, 1995 | 1 | 6:14 | Nagoya, Aichi, Japan |
| Niederlage | 1-1 | Manabu Yamada | Submission (achilles lock) | | Pancrase: King of Pancrase Tournament Second Round | Dec 16, 1994 | 1 | 8:38 | Tokyo, Japan |
| Sieg | 1-0 | Bas Rutten | Decision (majority) | | Pancrase: King of Pancrase Tournament Opening Round | Dec 16, 1994 | 1 | 10:00 | Tokyo, Japan |
