O'Carroll made his championship debut for Dublin against Wexford in the 2007 Leinster championship and scored a total of 1–01 in a game which Dublin lost by a point.
[1] O'Carroll helped guide Dublin to victory in the 2005 Leinster Minor Hurling Championship by scoring one point in the game.
[2] He won a Dublin Senior Football Championship medal with Crokes in October 2008 at Parnell Park appearing as a substitute.
[3] He then went on to win the Leinster Senior Club Football Championship and the All-Ireland Senior Club Football Championship with Crokes.
[4] Ross won a Sligo Senior Football Championship in 2023 with Coolera/Strandhill GAA after defeating St. Molaise Gaels in the final.