Jake LaMotta had one of the best chins in boxing history. In over 110 fights against the greatest middleweights in history, LaMotta was only knocked to the canvas once in his entire 14 year career. Turning pro in the early 1940s, Lamotta ran up an impressive undefeated streak before losing. He was the first fighter to defeat the great Sugar Ray Robinson (Robinson was 40-0). Claimed to have "taken a dive" against "Blackjack" Billy Fox in New York City. Fox was 49-1 with 49 knockouts. Captured the...