Jersey Joe Walcott and Marciano needed a knockout to win, according to two of the three official scorecards. In the thirteenth round with Marciano pressuring Walcott against the ropes, both threw simultaneous right hands. Marciano landed his punch first on Walcott´s jaw in what is considered one of the hardest punches thrown in boxing history. Walcott collapsed with his arm hanging over the ropes then fell to the canvas where he was counted out. There was a rematch in Chicago, on May 15, 1953, and the second time around, Walcott was again defeated by Marciano by a knockout, this time in the first
Jersey Joe Walcott finally become world heavyweight champion, at the relatively old age of 37. This made him the oldest man ever to win the world heavyweight crown (a distinction he would hold until George Foreman won the title at age 45 in 1994). Walcott retained the title with a 15-round decision victory against arch-enemy Charles. On September 23, 1952, he defended his title for the second time. His opponent was the undefeated Rocky Marciano. In the first round Marciano was knocked down for the first time in his career, with a left hook from Walcott. Walcott was clearly ahead in the scoring