Leon Spinks vs. Muhammad Ali II John Tate and Gerrie Coetzee for the vacant WBA title. "We knew Muhammad Ali was going to retire," Arum said, "but as long as he delayed, I couldn't make definite plans." However, in October 1980 Ali returned to face WBC Champion Larry Holmes but was stopped by TKO in the 10th round. He then retired for good after a lackluster loss to Trevor Berbick in December 1981, thus making this fight the final win in Ali's career. Leon Spinks vs. Muhammad Ali II Leon Spinks vs. Muhammad Ali II, was a professional boxing match contested on September 15, 1978 in
Mike Tyson vs. Michael Spinks The next year Spinks won the lineal championship from Mustafa Wassaja and then took the WBC title from Dwight Braxton in 1983 to become the undisputed champion. In 1984, Spinks added the newly created IBF title. In September 1985, after having defended his titles a combined total of ten times, Spinks moved up to the heavyweight class to challenge reigning IBF, "Ring", and lineal champion Larry Holmes, who had been champion since 1978. Spinks defeated Holmes in a fifteen-round decision to become the first reigning light heavyweight champion to win the heavyweight championship. Spinks defeated Holmes again in a rematch