Jake LaMotta vs Sugar Ray Robinson - 13th Round

On February 14, 1951, Robinson and LaMotta met for the sixth time. The fight would become known as The St. Valentine’s Day Massacre. Robinson unleashed a series of savage combinations on LaMotta for three rounds finally stopping the champion for the first time in their legendary six bout series— in the 13th round and giving LaMotta his first legitimate knockout loss in 95 professional bouts.