 On 14 July 2004, Fennelly won a Leinster Championship medal after lining out at left corner-back in a 1-16 to 2-03 defeat of Wexford in the final.He retained his position at left corner-back when Kilkenny qualified for the All-Ireland final against Tipperary.Fennelly ended the game with a winners' medal following a 3-21 to 1-06 victory.