Mike Tyson this combination. Expectations for Tyson were extremely high, and he was the favorite to win the heavyweight unification series, a tournament designed to establish an undisputed heavyweight champion. Tyson defended his title against James Smith on March 7, 1987, in Las Vegas, Nevada. He won by unanimous decision and added Smith's World Boxing Association (WBA) title to his existing belt. "Tyson-mania" in the media was becoming rampant. He beat Pinklon Thomas in May by TKO in the sixth round. On August 1 he took the International Boxing Federation (IBF) title from Tony Tucker in a twelve round unanimous decision, with
Mike Tyson vs. Marvis Frazier before unleashing two consecutive uppercuts, the second of which knocked Frazier unconscious. Tyson then landed several more blows before Frazier fell to the canvas, slumped against the ropes. Referee Joe Cortez began to count to ten, but as Frazier was clearly unresponsive, stopped the count at five and ended the fight. The fight would last only 30 seconds, becoming the quickest victory of Tyson's professional career. Mike Tyson vs. Marvis Frazier Mike Tyson vs. Marvis Frazier was a professional boxing match contested on July 26, 1986. The fight is notable for being the quickest knockout victory of Tyson's professional career,