 He has 2 NFL medals from 2004 and 2005 and also won the Munster club championship with his club Rathmore.O'Mahony again played an important part as Kerry reached the 2008 All-Ireland In 2010, O'Mahony took a break from inter-county football after Kerry's NFL campaign for personal reasons; he, however, returned to the panel for the Championship.In 2005, following the All-Ireland final loss to Tyrone, O'Mahoney tested positive for a banned steroid, salbutamol.