Shannon Briggs Martial artist

Shannon Briggs (born December 4, 1971) is an American professional boxer. Briggs is a former WBO heavyweight champion. He also holds the record for the most first-round knockouts of any heavyweight champion in history with 35, compared to other noted knockout artists Joe Frazier and Lennox Lewis (5 each), Sonny Liston (8), George Foreman (15), and Mike Tyson (22). He is best known for his victories over George Foreman, Ray Mercer and Siarhei Liakhovich.