Became the youngest heavyweight champion in boxing history at the age of 20. Earned an estimated $400 million in career ring ...

who would become Marciano's trainer, first saw Rocky, he told Angelo Dundee, his assistant, "I gotta a guy who's short, stoop-shouldered, balding, got two left feet and, God, how he can punch." ...

He was able to punch from that position, come straight up from the bag and hit a heck of a shot. . . . It was just bang-bang-bang-bang-BANG and get him outta there." Rocky Marciano is the only ...