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
Mike Tyson vs. Michael Spinks if it ended in a knockout, but favoured Spinks if it went the distance. 1940s middleweight champion Rocky Graziano predicted Spinks would "psych out Tyson, then knock the hell out of him." Archie Moore gave Spinks "a wonderful chance" of winning. Floyd Patterson, who like Tyson had been trained by Cus D'Amato, said "I originally picked him [Tyson], and I still do, but now I give Spinks a chance." Spinks entered the ring as a 4–1 underdog. Minutes before the fighters were due to enter the ring, there was a commotion in Tyson's dressing room when Butch Lewis noticed a