Federer won the first set 6-3

Roger Federer, of Switzerland, reacts after winning a point over Juan Martin del Potro, of Argentina, during the men's finals championship at the U.S. Open tennis tournament in New York, Monday, Sept. 14, 2009.
Juan Martin del Potro won his maiden Grand Slam title at the US Open defeating Roger Federer. In the women's doubles the Williams sisters-Venus and Serena defeated Liezel Huber and Cara Black to win the women's doubles title.
Federer won the first set 6-3

Roger Federer, of Switzerland, reacts after winning a point over Juan Martin del Potro, of Argentina, during the men's finals championship at the U.S. Open tennis tournament in New York, Monday, Sept. 14, 2009.
