March 29, 1966, Muhammad Ali--the self-proclaimed greatest boxer of all time--clashed with working-class Canadian champ George Chuvalo in a heavyweight title marathon that lasted all 15 rounds. Ali won by unanimous decision but declared ...See moreMarch 29, 1966, Muhammad Ali--the self-proclaimed greatest boxer of all time--clashed with working-class Canadian champ George Chuvalo in a heavyweight title marathon that lasted all 15 rounds. Ali won by unanimous decision but declared Chuvalo "the toughest guy I ever fought." Written by
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