Pancrase King of Pancrase Openweight Championship (Three times) Unified the King of Pancrase Championship Two successful title defenses Sherdog Mixed Martial Arts Hall of Fame (2014 inductee) Fight Matrix 1996 Fighter of the Year Mixed martial arts record |- | Win | align=center| | Ruben Villareal | TKO (leg kicks) | WFA: King of the Streets | | align=center| 1 | align=center| 3:24 | Los Angeles, California, United States | |- | Win | align=center| 27–4–1 | Kevin Randleman | Decision (split) | UFC 20 | | align=center| 1 | align=center| 21:00 | Birmingham, Alabama, United States | |- | Win | align=center| 26–4–1 | Tsuyoshi Kohsaka | TKO (punches) | UFC 18 | | align=center| 1 | align=center| 14:15 | Kenner, Louisiana, United States | |- | Win | align=center| 25–4–1 | Kengo Watanabe | TKO (palm strikes) | Pancrase: 1998 Anniversary Show | | align=center| 1 | align=center| 2:58 | Tokyo, Japan | |- | Win | align=center| 24–4–1 | Keiichiro Yamamiya | Submission (rear-naked choke) | Pancrase: Alive 11 | | align=center| 1 | align=center| 4:58 | Yokohama, Kanagawa, Japan | |- | Win | align=center| 23–4–1 | Osami Shibuya | Submission (body crunch) | Pancrase: 1997 Anniversary Show | | align=center| 1 | align=center| 3:15 | Urayasu, Chiba, Japan | |- | Win | align=center| 22–4–1 | Takaku Fuke | Submission (armbar) | Pancrase: Alive 7 | | align=center| 1 | align=center| 4:28 | Hakata, Fukuoka, Japan | |- | Win | align=center| 21–4–1 | Kiuma Kunioku | Decision (points) | Pancrase: Alive 4 | | align=center| 1 | align=center| 15:00 | Urayasu, Chiba, Japan | |- | Draw | align=center| 20–4–1 | Osami Shibuya | Draw (majority) | Pancrase: Alive 3 | | align=center| 1 | align=center| 15:00 | Nagoya, Aichi, Japan | |- | Win | align=center| 20–4 | Manabu Yamada | Submission (ankle lock) | Pancrase: Truth 7 | | align=center| 1 | align=center| 0:54 | Nagoya, Aichi, Japan | |- | Win | align=center| 19–4 | Masakatsu Funaki | KO (knee) | Pancrase: 1996 Anniversary Show | | align=center| 1 | align=center| 17:05 | Urayasu, Chiba, Japan | |- | Win | align=center| 18–4 | Jason DeLucia | KO (kick to the body) | Pancrase: Truth 6 | | align=center| 1 | align=center| 8:48 | Fukuoka, Fukuoka, Japan | |- | Win | align=center| 17–4 | Frank Shamrock | TKO (doctor stoppage)