Biography
George Chuvalo, CM (born September 12, 1937) is a retired Canadian professional boxer who was a five-time Canadian heavyweight champion, and two-time world heavyweight title challenger. Chuvalo, who is considered by many to have one of, if not the best chin in boxing history, was never knocked down in his amateur career, in his professional career, or in sparring, and was ranked #4 on ESPN's greatest chin in boxing history list. https://en.wikipedia.org/wiki/George_Chuvalo
