Muhammad Ali 21 during an elimination bout following Rocky Marciano's retirement. Mike Tyson broke both records in 1986 when he defeated Trevor Berbick to win the heavyweight title at age 20. Soon after the Liston fight, Clay changed his name to Cassius X, and then later to Muhammad Ali upon converting to Islam and affiliating with the Nation of Islam. Ali then faced a rematch with Liston scheduled for May 1965 in Lewiston, Maine. It had been scheduled for Boston the previous November, but was postponed for six months due to Ali's emergency surgery for a hernia three days before. The fight
Muhammad Ali vs. Floyd Patterson mocked, humiliated and punished Patterson throughout the fight before knocking him out in the 12th round. A New York Times reporter complained that the fight was like watching someone "pulling the wings off a butterfly." On September 20, 1972, Patterson fought Ali for the second time. At age 37, Patterson was stopped in the 7th round. The defeat proved to be Patterson's last fight, although there was never an announcement of retirement. Muhammad Ali vs. Floyd Patterson Muhammad Ali vs. Floyd Patterson refers to two North American Boxing Federation heavyweight professional boxing matches between the champion Muhammad Ali and former