by Rocky Marciano is not as well-known by our generation as the likes of Manny Pacquiao, Floyd Mayweather or Mike Tyson. However, he is the only heavyweight boxing champion that was never beaten. He was like a brick wall that kept coming at his opponents.
He also has the highest knockout percentage in the history of boxing.
https://www.youtube.com/watch?v=yTU-mbGkNNo
Rocky Marciano died in 1963 at the age of 45 but his legend lives on.
