Prior to his professional career, Mooney played college football at Georgetown University.

[2] After the end of his NFL career, Mooney became a patrolman for the Chicago Police Department, for whom his father worked as a detective, at the Hudson avenue station.

He returned to football in 1940 as a coach for the Chicago Gunners;[3] he had also coached the New York Yankees of the American Football League (AFL) in 1937, which included briefly playing in a game that year against the Rochester Tigers before fracturing his left ankle.

[3] He reached the rank of corporal while serving in the United States Army during World War II, and was killed in action on August 12, 1944, when he was shot by a sniper in France.

This biographical article relating to an American football running back born in the 1900s is a stub.