Former Shooto welterweight Champion who competed for Dream, PRIDE and the UFC.
He won his MMA debut with an armbar submission on October 4, 1996.
He was undefeated in his first 20 fights before facing Anderson Silva in 2001.
He had a highly publicized extramarital affair in 2008.
He suffered a TKO defeat caused by Matt Hughes strikes on March 22, 2002.