Mike Tyson vs. Michael Spinks fight in boxing history, grossing some $70 million, of which Tyson earned a record purse of around $20 million and Spinks $13.5 million. Tyson won the fight, knocking out Spinks in 91 seconds. Michael Spinks became a professional boxer shortly after he won the gold medal at middleweight in the 1976 Summer Olympics. Initially, Spinks was more concerned with assisting his brother Leon's rise to the heavyweight championship, but was later convinced to turn pro himself. In 1981 Spinks fought Eddie Mustafa Muhammad for the WBA light heavyweight championship and defeated him by decision to win his first world title.
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".