Michael Spinks vs. Dwight Muhammad Qawi set for September 27 of 1984, but it was cancelled after Qawi was injured during training, three weeks before the fight. Spinks went on to become the first world light heavyweight champion in boxing history to go up in weight and win the world heavyweight title. Qawi, for his part, went up to the cruiserweight division, where he reigned as WBA world champion from 1985 to 1986. Both fighters are now members of the International Boxing Hall of Fame. Confirmed bouts: Michael Spinks vs. Dwight Muhammad Qawi Michael Spinks vs. Dwight Muhammad Qawi, billed as "The Brawl for it All",
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,