US Open Tennis Championship in New York Day 8

Juan Martin Del Potro hits a forehand in his match against Kei Nishikori on day eight at the U.S. Open Tennis Championships at the U.S. National Tennis Center in Flushing Meadows, New York on September 1, 2008. Del Potro defeated Nishikori 6-3 6-4 6-3. (UPI Photo/John Angelillo)