Became the youngest heavyweight champion in boxing history at the age of 20. Earned an estimated $400 million in career ring ...

Ali—then known by his birth name, Cassius Clay—began boxing in his hometown of Louisville ... as Ali knocked out Liston with a “phantom punch” that very few in the audience could even ...

Fans and historians believe the chaotic finish stemmed from Ketchel ... of the most infamous fights in boxing history. Known as the "Phantom Punch" fight, Ali knocked out Liston in the first ...

Muhammad Ali (r) punches Joe Frazier (l) in the head during the seventh round of their boxing match. Referee Carlos Padilla, Jr. (c) supervises this heavyweight match in Manila, Philippines ...