Michael Spinks years he remained close to his former promoter, Butch Lewis, training fighters and making rare public appearances at events promoted by Lewis. In 2011, however, after Lewis died from natural causes, it was reported that Spinks had sued Lewis's estate in a Delaware Chancery Court, alleging that the promoter had failed to properly manage more than $24 million Spinks had earned in the ring and had violated their agreements that Lewis would continue to manage Spinks's money and pay his living expenses for the rest of the boxer's life. The lawsuit alleged that he commingled his personal funds with Spinks's
Michael Spinks twelve-round majority decision over Eddie Davis. He and Qawi were only a couple of weeks away from fighting a rematch in September of that year, but that fight got called off when Qawi was injured during training. Spinks also was recognized as IBF Light heavyweight champion in 1984. In 1985, Spinks beat David Sears and Jim McDonald, both by knockout, in title defenses, before challenging Larry Holmes for the IBF and lineal heavyweight championship. Holmes was trying to tie Rocky Marciano's record of 49-0 as the heavyweight champion, but it was Spinks who made history that night, winning a controversial