Muhammad Ali vs. Leon Spinks September 15, 1978, for the World Boxing Association and Lineal Heavyweight Champion titles. Ali regained the title with a Unanimous Decision over Spinks. Confirmed bouts: Muhammad Ali vs. Leon Spinks Muhammad Ali vs. Leon Spinks was the World Boxing Council professional boxing match contested on February 15, 1978 in Las Vegas, Nevada for the Undisputed Heavyweight Championship. After his unanimous decision victory against Earnie Shavers, Muhammad Ali decided to face 1976 Olympic Gold medalist Leon Spinks, knowing that he'd have to face Ken Norton for the fourth time or lose his WBC belt, after the No 1 ranked Norton beat
Leon Spinks heavyweight champion Gerrie Coetzee. In the following fight, Spinks defeated former world title challenger and European title holder Alfredo Evangelista by a knockout in round 5. He fought to a draw in with Eddie López, in May 1980 he scored a knockout over Kevin Isaac, and in October beat the WBC's top-ranked challenger, Bernardo Mercado, by a knockout in round nine, this fight was on the undercard of Muhammad Ali vs. Larry Holmes. His strong performance against Mercado earned Spinks a title match against Larry Holmes. In Spinks' only fight in 1981, and what would be his last opportunity to