Boxer Rocky Marciano (1923-1969), who held the heavyweight boxing title for four years during the 1950s, is the only boxing champion to ever retire undefeated.

Certain names always come up, and always will come up, when boxing fans discuss the question of who was the greatest heavyweight boxing champion of all time. Muhammad Ali, Joe Louis, Jack Dempsey are all names which have their supporters. So is Rocky Marciano, who held the title for four years in the 1950s and who has one accomplishment no other heavyweight champ can claim: He is the only one ever to retire undefeated.

Boxing Not First Choice

Marciano was born Rocco Francis Marchegiano on September 1, 1923 in Brockton, Massachusetts. His father, Pierino, worked at a shoe factory. His mother's name was Pasqualena, and Rocky would spend much of his life making sure she didn't have to live in the poverty Rocky knew growing...