Clay announced his arrival into the boxing world with this victory over the reigning champion, and would wind up being the first fighter to capture the heavyweight title three times in his career. After this fight, Clay changed his name to Muhammad Ali.RANK: 21 LOCATION: Miami Beach, Florida DATE: 2/25/1964 CATEGORY: Boxing
The underdog Cassius Clay, later known as Muhammad Ali, took on defending champion Sonny Liston, who had been the heavyweight champion since 1962. Liston conceded after the sixth round after suffering cuts on his face and an injured shoulder. Ali won by technical knockout, becoming the heavyweight champion.