Watching boxing on his familyâ€™s black and white TV set, a young Frazier would often shadowbox on the porch. As he got older, he made a makeshift punching bag and worked on his form. After a freak accident his left arm damaged, Frazier developed a powerful left hook that would become his trademark knockout punch. As an amateur fighter, he won the Middle Atlantic Golden Gloves heavyweight championship three consecutive years (1962-64). His only loss in those three years would be to Buster Mathis, who defeated him again by decision in the 1964 Olympic boxing team qualifying bout.