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
Rocky Marciano 6½-to-5 underdog. Marciano upset Louis in the latter's last career bout. After four more wins, including victories over 35-year-old Lee Savold (96–37–3) and Harry Matthews (81–3–5), Marciano received a shot at the world title. Marciano, 29, faced the World Heavyweight Champion, 38-year-old Jersey Joe Walcott, in Philadelphia on September 23, 1952. Walcott dropped Marciano in the first round and steadily built a points lead. In the 13th, Walcott used his trademark feint to set up his right hand, but Marciano's "Suzie Q" landed first, a powerful right hook causing Walcott to slump to his knees with his arm draped over