UFC Japan: Ultimate Japan (UFC 15.5)
Alternate Bout
Tra Telligman vs. Brad Kohler
- Telligman wins by submission (armbar) at 10:10.
Middleweight Championship Bout
- Frank Shamrock vs. Kevin Jackson
- Shamrock wins by submission (armbar) at 0:16
Frank Shamrock claimed the inaugural UFC Middleweight Championship with this victory. After UFC 31, the UFC changed this weight class to the light-heavyweight class and the accompanying title to the UFC Light Heavyweight Championship.
Superfight
- Superfight:
Vitor Belfort vs. Joe Charles
- Belfort wins by submission (armbar) at 4:04.
Heavyweight Championship Bout
- Randy Couture vs. Maurice Smith
- Couture wins by majority decision at 21:00.
UFC Japan Tournament
Heavyweight Semifinals
Kazushi Sakuraba vs. Marcus Silveira
- Ruled a No Contest (referee stopped the bout early at 1:51)
- David “Tank” Abbott vs. Yoji Anjo
- Abbott wins a unanimous decision at 15:00. Abbott is unable to continue in the tournament due to a broken hand.
Heavyweight Finals
- Kazushi Sakuraba vs. Marcus Silveira
- Sakuraba wins the Ultimate Japan Tournament by submission (armbar) at 3:45. Due to the NC, and Tank Abbott bowing out of the tournament, UFC officials ruled that a rematch between Sakuraba and Silveira would serve as the Heavyweight Tournament Finals.