Career
Cain served as the head football coach at Southwestern Louisiana Institute, now the University of Louisiana at Lafayette, from 1937 to 1941 and in 1946, compiling a record of 33–19–5. He was also the head baseball coach at Southwestern Louisiana from 1942 to 1944. In 1947, Cain moved to the University of Mississippi to serve as backfield coach for the football team under Johnny Vaught.
He was also the head tennis coach at Ole Mission from 1957 to 1973.
Cain was elected to the College Football Hall of Fame as a player in 1973.