Hahn served one year as the Assistant Men’s Tennis Coach at Purdue University before joining the USTA staff in 2009. He played professionally from 2004-07, winning six ITF doubles titles and peaking to No. 410 in doubles. He also served as a practice partner for the U.S. Fed Cup team for five ties. Hahn played at the University of Florida, where he helped lead the Gators to two SEC titles.