He played college football for the Army Black Knights of the United States Military Academy.

Mooney attended highschool at James E. Taylor where he played on both sides of the ball as a fullback and linebacker.

For his performance against the Bulls, who went on to beat undefeated Ball State for the MAC championship, Mooney was honored with a "helmet sticker" by ESPN.

[2][9] Army defensive coordinator John Mumford caused some controversy earlier in the season when he stated that "Collin Mooney is probably better than any Navy fullback we've ever faced.

[14] After seeing modest playing time in the 2012 and 2013 seasons[4] for the team, Mooney was waived by the Tennessee Titans on August 29, 2014.