DOB 8th March 1972
Turned professional 1991
Highest Tournament Break 143 - B&H Championship 1991
- 1 Ranking event win: 1999 British Open
- O’Brien reached the last 32 and beyond in seven events during a solid 2015/16 season.
- He made the last 32 at the Welsh Open after a gutsy 53 break in the final frame helped him to a 4-3 win over Ali Carter.
- O’Brien reached the final of the 2014 Gdynia Open in Poland before being denied the trophy by Shaun Murphy, losing 4-1.
- The Irishman made his first ranking event final in eight years with a brilliant run at the 2007 Northern Ireland Trophy in Belfast. He scored a superb 5-4 win over John Higgins and went on to beat Barry Hawkins, Mark Allen and Ronnie O’Sullivan to reach the final, where he succumbed to Stephen Maguire.
- He showed his battling qualities in the 1999 British Open, winning four of his six matches on a deciding frame then overcoming Anthony Hamilton 9-7 in the final to claim his first and only ranking title to date.
- He’s an enthusiastic runner with Lucan Harriers. He and wife Jean have a daughter Isobel.