2006-07: Ran indoor season bests in the 60m hurdles (8.74) and the 400m (51.83) at the Redbird Open... At the indoor Notre Dame Invitational ran the 500m in 1:08.38... Ran outdoor season bests in the 200m (23.01) at the Wisconsin Twilight and the 400m hurdles (53.83) at the Gregory Invitational...

High School: O'Brien was a four-year letterwinner at Prospect High School competing in sprint hurdle events ... He earned team MVP honors, while helping the Knights to four straight Mid-Suburban League East Division Championships and a sectional championship in 2005 ... O'Brien placed third at the state championship in the 300m hurdles in 2006.

Personal: O'Brien was born on September 15, 1987 and is the son of Michael and Ellen O'Brien ... He has two younger brothers, Kevin and Danny ... O'Brien is majoring in computer engineering.