Michael Spinks world Heavyweight champion in Las Vegas. 1979 saw Spinks get less than three minutes of boxing action inside a ring, with his only fight ending in a first round knockout of Marc Hans, but in 1980, Spinks took his ascent towards the top to another level, when he beat future IBF super-middleweight champion Murray Sutherland, David Conteh, and fringe contenders Ramon Ronquillo and Alvaro Yaqui Lopez (who challenged for a world title four times). Of his five wins that year, three came by knockout, Sutherland and Johnny Wilburn being the only ones who lasted the distance. By 1981, Spinks was
Leon Spinks bruised and puffy face. Spinks' victory over Ali was the peak of his career. He was the only man to take a title from Muhammad Ali in the ring, as Ali's other losses were non-title contests or bouts where Ali was the challenger. Spinks' gap-toothed grin was featured on the cover of the February 19, 1978 issue of "Sports Illustrated". However, Spinks was stripped of his world title by the WBC for refusing to defend it against Ken Norton, instead agreeing to a return bout against Ali to defend his WBA crown. The title, stripped from Spinks, was then awarded