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the great Muhammad Ali had all he could handle with the Canadian George Chuvalo
he beat Chuvalo twice on points but never knocked him down
after the first fight Ali spend the night in the hospital - he was pissing blood
he called Chuvalo "the toughest guy I ever fought"
Chuvalo was never knocked down in 93 fights and also fought Frazier and Foreman
at 2:50 in the vid he gets to Ali pretty good but can't knock him down
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