UFC 23 – Ultimate Japan 2 was a mixed martial arts event held by the Ultimate Fighting Championship on November 19, 1999 at Tokyo Bay NK Hall in Tokyo, Japan.
Eugene Jackson vs Keiichiro Yamamiya
Pedro Rizzo vs Tsuyoshi Kosaka
Tournament
Katsuhisa Fujii vs Masutatsu Yano
Kenichi Yamamoto vs Daiju Takase
Kenichi Yamamoto vs Katsuhisa Fuji
Heavyweight Championship Title bout
