Sugar Ray Leonard had no doubt that heโd defeat Roberto Duran when the two warriors squared off in a rematch of their epic first welterweight title bout that ended in a split-decision victory for the Panamanian known as โThe Hands of Stone.โ What Leonard, the legendary six-time world champion, didnโt know was that Duran โ one of the most feared fighters of his generation โ would surrender after uttering the most infamous phrase in the history of boxing, โNo Mas.โ

