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
Michael Spinks already a top ranked contender, and after beating former and future world light-heavyweight champion Marvin Johnson by a knockout in four rounds, the WBA made Spinks their number one challenger, and so, on July 18 of that year, he met WBA light-heavyweight champion Eddie Mustafa Muhammad, once again in Las Vegas. Spinks dropped Mustafa Muhammad in round 12 and went on to become the WBA light heavyweight champion with a 15-round decision win. He defended the title once in '81, beating Vonzell Johnson by a knockout in seven. 1982 began with a knockout victory over Mustafa Wassaja. Spinks had become