This Video should showcase the willpower and determination of Rocky Marciano! Rocky Marciano – The Brockton Blockbuster Born Rocco Francis Marchegiano (September 1, 1923 – August 31, 1969) was an American professional boxer who competed from 1947 to 1955, and held the world heavyweight title from 1952 to 1956. He is the ONLY heavyweight champion to have finished his career undefeated. His six title defenses were against Jersey Joe Walcott (from whom he had taken the title), Roland La Starza, Ezzard Charles (twice), Don Cockell and Archie Moore. Highlights in Full Color of the legendary former undisputed Heavyweight champion. One of my best videos so far: Tribute to the Brockton Blockbuster with rare and never before seen footage of Rocky Marciano in Full Color.