Rocky Marciano

Rocky Marciano (born Rocco Francis Marchegiano; September 1, 1923 – August 31, 1969) was an American professional boxer and the World Heavyweight Champion from September 23, 1952, to April 27, 1956. Marciano is the only person to hold the heavyweight title without a bout tie or defeat during his entire career. Marciano defended his title six times, against Jersey Joe Walcott, Roland La Starza, Ezzard Charles (twice), Don Cockell, and Archie Moore.