Career
He served as the head football coach at Boston University from 1930 to 1931, compiling a record of 3–14–1. Mahaney was a four-year starter and three-time all-conference selection as a player for Holy Cross from 1921 to 1924. He was selected as an All-American end after his senior season of 1924.
He died after a short illness in 1969.
