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
Michael Spinks by a knockout in four against Steffen Tangstad. In 1987 he was stripped of the crown by the IBF for refusing to fight their mandatory challenger, Tony Tucker, and accepting a higher offer to fight Gerry Cooney instead. Spinks knocked out Cooney in five rounds, and after Mike Tyson had unified the heavyweight belts, fans started clamoring for a fight between them as many still recognized Spinks as the legitimate lineal champion. The fight between Spinks and Mike Tyson took place in June 1988, with Tyson knocking Spinks down twice on his way to a first-round knockout. Tyson was the