He played amateur hockey in Ottawa and Iroquois Falls fromm 1921 to 1923 and then played for three seasons in the United States Amateur Hockey Association. From 1926-27 through 1936-37 Cox played steadily in the minor pros and earned callups to the NHL as a fill-in for an injured goaltender. He played a total of five games and had a goals-aginst-average of 2.50. Cox retired in 1937.