In an attempt to gain attention for the embattled Kingdom Pro Wrestling league, Hiromitsu Kanehara and Yoji Anjoh signed on to compete in the Ultimate Fighting Championship's Ultimate Japan tournament. Kanehara was injured in his training for the tournament, and Sakuraba wound up as his late-hour substitute. The tournament was intended for heavyweights, but Sakuraba who weighed 183 pounds (middleweight by modern standards), was nearly twenty pounds beneath the UFC's 200 pound designation for the weight class. Having reported himself as 203 pounds (Light heavyweight by modern standards) in order to gain entry, Sakuraba was paired off against the 240 pound Brazilian jiu-jitsu blackbelt and former Extreme Fighting champion, Marcus Silveira.