 Facing the Stanford Cardinal on February 20, 2004, O'Brien had a tour-high 3 RBIs on a home run to eventually win 9–0.In the Olympics, O'Brien-Amico had a tournament-best 2 RBIs off Melanie Roche of Australia on August 15; the US eventually won 10-0 run-ruling the Australians.She would equal her performance vs. Greece on August 19.