sentences:  He represented the Republic of Ireland at U-18 level and played for Belvedere.He attended college in the States at George Mason University where he was a four-year starter, four time all CAA conference team (2001–04), CAA Rookie of the Year (2001), and set many GMU school records.O'Hara was invited to the MLS Combine after his final season at GMU but signed with Sligo Rovers in his native Ireland for the 2005 campaign.