Switzerland's Roger Federer, second seed, returns the ball to Radek Stepanek of the Czech Republic in third-round action at the U.S. Open tennis championship at the U.S. National Tennis Center on August 31, 2008 in Flushing Meadows, New York. Federer won 6-3, 6-2, 6-2. (UPI Photo/Monika Graff)