He defeated heavyweight kings Sonny Liston twice Floyd Patterson twice Ernie Terrell Jimmy Ellis Ken Norton twice Joe Frazier twice George Foreman and Leon Spinks. He defeated light-heavyweight champs Archie Moore and Bob Foster.
Muhammad Ali beat more champions and top contenders than any heavyweight champion in history.

. Muhammad Ali 1942-2016 was an American former heavyweight champion boxer and one of the greatest sporting figures of the 20th century. An Olympic gold medalist and the first fighter to capture.