Which heavyweight boxing champion retired in April 1956 without losing a professional boxing match?
Rocco Marchegiano Rocky Marciano The Brockton Blockbuster Brockton Bomber Marciano, Rocky Rocco francis marchegiano The Brockton Bomber Brockton Blockbuster Rocco Francis Marchegiano
rocco francis marchegiano rocky marciano brockton bomber marciano rocky brockton blockbuster rocco marchegiano
rocky marciano
WikipediaEntity
Rocky Marciano