One of the most feared hitters in Negro League history, Mule played first base and outfield for a number of top-end clubs, including the Newark Eagles, in a career than spanned both World Wars in the 20th century. He played in no fewer than five Negro League All-Star games, the highlight of which came in 1935 when he smashed an 11th-inning three-run homer off three-run homer of fellow Hall-of-Famer Martin Dihigo.