08/06/2009 - Under Armour All-America Game 2009 At 6-foot-3 and 175 pounds, O'Brien has a pro body and the makings of five good tools. He has a quiet approach in the batter's box with good balance. He consistently gets the barrel on the ball and hits hard line drives. In the field he is fluid with enough arm strength to stay on the left side of the diamond. The game comes easy to him. He will turn some heads as he matures physically. O'Brien played at Florida State University and the University of Tampa.