Sixth-seeded Juan Martín Del Potro stunned Roger Federer, 3-6, 7-6 (5), 4-6, 7-6 (4), 6-2, and claimed the mens singles title, which Federer won the past five years.
Michelle V. Agins/The New York Times
U.S. Open Champions
They're all No. 1: these are the champions of the 2009 United States Open.