Poland's Agnieszka Radwanska returns the ball to Venus Williams of the U.S.A, seventh seed, in the second set of fourth round action at the U.S. Open tennis championship at the U.S. National Tennis Center on September 1, 2008 in Flushing Meadows, New York. Williams won 6-1, 6-3. (UPI Photo/Monika Graff)