Mike Tyson vs. Michael Spinks the sport a month later. The Tyson fight was the only loss of his professional career. Tyson also spoke of retiring, hinting that "this may be my last fight." The win over Spinks has been described as the pinnacle of Tyson's boxing career. It was also his last fight under longtime trainer Kevin Rooney, who was dismissed by Tyson in December. Tyson made two more successful title defences before losing to James 'Buster' Douglas in a major upset in 1990. He continued fighting until 2005, but was unable to replicate his earlier achievements. Tyson and Spinks have both been inducted
Leon Spinks to Norton. His second match with Ali, at the Louisiana Superdome on September 15, 1978, went badly for Spinks. A now-in-shape Ali—with better, sharper tactics—rarely lost control, winning back his title by a unanimous fifteen-round decision. Ali regained the title, becoming the first three-time lineal heavyweight champion. Spinks was never given a rematch; Ali retired after the fight (although he came out of retirement a few years later to fight Larry Holmes and Trevor Berbick). Spinks's next fight, his only one in 1979, was at Monte Carlo, where he was knocked out in the first round by future WBA world