Leon Spinks results. In 1994 he lost a bout by KO to John Carlo, the first time a former heavyweight champion had lost to a boxer making his pro debut (promoter Charles Farrell later admitted to falsifying Carlo's record in order to get the fight sanctioned by the District of Columbia). Spinks retired at age 42, after losing an 8-round decision to Fred Houpe in 1995, who was coming off a seventeen-year hiatus. During the 1990s, Spinks worked for Frontier Martial-Arts Wrestling, winning its world title in 1992, making him the only man to hold titles in both boxing and wrestling. In
Mike Tyson vs. Michael Spinks between Tyson and Spinks grew to settle the issue of who the real champion was, but negotiations were protracted because Tyson's co-managers Bill Cayton and Jimmy Jacobs and Spinks' manager Butch Lewis struggled to agree on terms. Negotiations temporarily broke down when Lewis insisted on a $15 million guarantee for his fighter. Annoyed at constantly being asked about the fight, Tyson eventually demanded that his managers reach an agreement with Lewis. By April an agreement had been reached, although another problem arose when the IBF threatened to strip Tyson of their title if the fight was not scheduled for 15