Jack Dempsey (William Harrison)

Manassa Mauler / World Champion

Legendary American boxer, World Heavyweight Champion, and innovator of the Dempsey Roll and Falling Step.

Quick Facts

Date of Birth6/24/1895

Date of Death5/31/1983

Era20th century

Country of OriginUSA

Rank / TitleWorld Heavyweight Champion (1919–1926) / Author of Championship Fighting

Active Years1914–1940

Biography

Jack Dempsey, World Heavyweight Champion from 1919 to 1926, revolutionized boxing biomechanics with the "Falling Step" and "Dempsey Roll", detailed in his book Championship Fighting.

Associated Martial Arts

Professional BoxingChampion→

The professional boxing circuit: longer bouts, no headgear and titles from four major sanctioning bodies. It differs from the amateur code in tactics, not technique.