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The legendary boxer Rocky Marciano, nicknamed "The Brockton Blockbuster," made an unparalleled mark in the sport, capturing the prestigious World Heavyweight Championship title and defending it successfully six times. Renowned for his exceptional prowess and unmatched knockout power, Marciano's reign at the pinnacle of boxing solidified his status as one of the greatest pugilists of all time, with an astonishing undefeated record throughout his remarkable career.