He will be most remembered for his incredible performances in the 2002 scoring an amazing 6–23 in a season which saw Dublin lift their first Leinster title since 1995.

In 2002 when he won the 2002 Adult FL Division 1 title with Kilmacud Crokes, although he received a red card 12 minutes into the second half.

This incident did not affect the score, and Kilmacud Crokes turned out winners against a resilient Ballyboden St. Enda's side.

He was a member of the team that won the All Ireland Club Championship in March 2009 when they beat Crossmaglen Ranger.

[8] In that game, Dublin were one point down when they won a free kick deep in injury time.

[10] His form in the final against Offaly did not reach expectations and although he started brightly against Westmeath, scoring a point, he tired in the second half and he was eventually replaced.

[11] Cosgrove made a similarly bright start against Mayo, this time scoring two points.