Boxer Muhammed Ali lives up to his nickname, “The Greatest,” after landing the climactic punch in one of history’s most heart-pounding heavyweight fights. The fearless 22-year-old Olympic Gold Medalist relished the battle with Liston, a heavyweight champ whose knockout record intimidated other would-be challengers. The 1965 bout, held in Maine, ended when Ali knocked out Liston halfway through the first round, then relentlessly taunted him. Liston was initially criticized for taking a dive for the Mafia, but was later cleared when the slow-motion fight footage revealed an authentic knockout.