He was world heavyweight boxing champion from 1952 until his retirement in '56.
The one and only Rocky Marciano.
Rocky Marciano was worlds heavyweight champion from '52 - '56.
Rocky Marciano he is the only heavy weight boxer to never lose.
No Joe Louis did not beat Rocky Marciano, as Marciano was the first boxer to retire undefeated in the heavy weight class.
Rocky Marciano was from brockton massachusetts, hence the nickname the Brockton Blockbuster. He was world champ from 1952 till 1956.
Ali beat sonny liston in 1964 to become the heavy weight champion.
Edge is the current heavy weight champion. He defeated John Cena at Backlash 2009 with the help of the Big Show