Roderick James "Jess" McMahon was a boxing promoter whose achievements included co-promoting a bout in 1915 between Jess Willard and Jack Johnson. In 1926, while working with Tex Rickard (who actually despised wrestling to such a degree he prevented wrestling events from being held at Madison Square Garden between 1939 and 1948), he started promoting boxing in Madison Square Garden in New York. The first match during their partnership was a light-heavyweight championship match between Jack Delaney and Paul Berlenbach.