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 round, Tyson was unexpectedly knocked out. After the fight, it was revealed that Tyson was trying to fight on one leg, having torn a ligament in his other knee in the first round. This was Tyson's fifth career defeat. He underwent surgery for the ligament four days after the fight. His manager, Shelly Finkel, claimed that Tyson was unable to throw meaningful right-hand punches since he had a knee injury. On June 11, 2005, Tyson stunned the boxing world by quitting before the start of the seventh round in a close bout against journeyman Kevin McBride. In the 2008 documentary