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
Mike Tyson vs. Michael Spinks and then successfully defended his title against Steffen Tangstad. Instead of defending his IBF title against top contender Tony Tucker, Spinks elected to take a more lucrative fight with former contender Gerry Cooney, who had fought three times in five years, in June 1987. The IBF responded by stripping Spinks of the title, but he was still in possession of the lineal and "Ring" titles and was considered by many to still be the rightful champion. Mike Tyson turned professional in 1985 and won his first 19 fights by knockout, quickly garnering media attention and establishing an "aura of invincibility".