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
Scipio Spinks shuttled between Class AAA and the major league club for the next few seasons. The hard-throwing Spinks had control problems but also struck out an average of one batter per inning in the American Association. In April 1972, Spinks was traded to the Cardinals for Jerry Reuss. He started the season with the major league club and pitched well. By midseason, he was third in the National League in strikeouts, behind only Steve Carlton and Tom Seaver. Spinks finished with a 2.67 ERA. Spinks was exceptionally fast for a pitcher, and for that reason the Cardinals frequently used him as