While in college Hahn represented the United States internationally, winning a gold medal at the 1987 Pan American Games, with Ronni Reis in the doubles event. She and Reis went on to feature together in the women's doubles at the 1987 US Open, which was her only grand slam main draw appearance. In 1987 she also won a doubles bronze, with Katrina Adams, at the 1987 Summer Universiade in Zagreb.