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. Henry Cooper Muhammad Ali vs. Henry Cooper Muhammad Ali and Henry Cooper fought two boxing matches with each other. Their first match took place on 18 June 1963 and the second on 21 May 1966. Ali won both matches.The first fight was stopped by the referee in the fifth round, and the second in the sixth round. Both fights were stopped after Cooper started bleeding excessively. The first Ali-Cooper bout is remembered for being one of the four fights in which Ali was officially knocked down in the ring by his boxing opponent. After a close victory over Doug Jones, Ali's management