Sports U.S Open Day 13 September 11, 2010 / 11:40 PM EDT / CBS News Novak Djokovic (credit: AP Photo/Kathy Willens) Novak Djokovic Roger Federer Novak Djokovic Kim Clijsters Kim Clijsters Novak Djokovic, Roger Federer Rafael Nadal Kim Clijsters Vera Zvonareva Kim Clijsters Kim Clijsters Kim Clijsters Kim Clijsters, Vera Zvonareva Kim Clijsters, Vera Zvonareva Rafael Nadal Rafael Nadal Rafael Nadal
