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. Buster Douglas Mike Tyson vs. Buster Douglas Mike Tyson vs. Buster Douglas, billed as "Tyson Is Back!", was a professional boxing match that occurred at the Tokyo Dome on February 11, 1990. The event is historically significant, as the then-undefeated, undisputed heavyweight champion Tyson lost by knockout to the 42–1 underdog Douglas. The fight is widely considered one of the biggest upsets in sports history. Going into the fight, Mike Tyson was the undefeated and undisputed heavyweight champion of the world. He held the WBC, WBA, and IBF titles. Despite the several controversies that marked Tyson's profile at the time, such as