UFC 25: Ultimate Japan 3 was a mixed martial arts event held by the Ultimate Fighting Championship on April 14, 2000 at the Yoyogi National Gymnasium in Tokyo, Japan.

Pride 5 took place at the Nagoya Rainbow Hall in Nagoya, Japan, on April 29, 1999. This event marked the Pride debuts of Mark Coleman and Vitor Belfort. It also featured a Gracie Jiu-Jitsu demonstration by Rickson Gracie and Royler Gracie.

Pride 4 was a mixed martial arts event held by KRS-Pride (later renamed Pride Fighting Championships). It took place at the Tokyo Dome in Tokyo, Japan, on October 11, 1998.