Who was the only World Heavyweight Boxing Champion to finish his career undefeated when he retired in 1956?
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 marciano rocky rocky marciano brockton blockbuster brockton bomber rocco marchegiano
rocky marciano
WikipediaEntity
Rocky Marciano