Leon Spinks win the heavyweight title, he had a clear loss by a TKO in the third round at Joe Louis Arena in Detroit, Michigan on June 12. It was Spinks' last heavyweight bout for years, as he began boxing in the cruiserweight division. He beat contender Ivy Brown by a decision in ten rounds, and gained a decision against former and future title challenger Jesse Burnett in twelve rounds. When his brother Michael Spinks defeated Larry Holmes in a controversial upset for the IBF heavyweight championship in 1985, they became the only brothers to have held world heavyweight championships. They kept
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