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 and narrow fifteen-round unanimous decision and becoming the first ever world light-heavyweight champion to win the world heavyweight title. His controversial victory over Holmes was named "Ring Magazine" Upset of the Year. With this, Michael and Leon had also become the first pair of brothers ever to be world heavyweight champions, followed two decades later by Wladimir and Vitali Klitschko. In 1986, Spinks and Holmes fought a rematch as part of the heavyweight unification series, and had nearly the same result, this time Spinks winning by a 15-round split decision. After that, he retained the world heavyweight championship once again,