A look at the matches from the main courts at Flushing Meadows
Maria Sharapova of Russia serves to Lourdes Dominguez Lino of Spain during their match at the US Open women's singles tennis tournament in New York, August 29, 2012.ADAM HUNGER/Reuters
Victoria Azarenka of Belarus serves to Kirsten Flipkens of Belgium during their women's singles match at the U.S. Open tennis tournament in New York August 29, 2012.JESSICA RINALDI/Reuters
John Isner of the U.S serves to Xavier Malisse of Belgium during their men's singles match at the U.S. Open tennis tournament in New York August 29, 2012.JESSICA RINALDI/Reuters
Samantha Stosur of Australia serves to Edina Gallovits-Hall of Romania during their match at the U.S. Open women's singles tennis tournament in New York August 29, 2012.KEVIN LAMARQUE/Reuters
Kim Clijsters of Belgium hits a return to Laura Robson of Britain during their women's singles match at the U.S. Open tennis tournament in New York August 29, 2012.JESSICA RINALDI/Reuters
Janko Tipsarevic of Serbia hits a return to Guillaume Rufin of France during their men's singles match at the U.S. Open tennis tournament in New York August 29, 2012.KEVIN LAMARQUE/Reuters
Samantha Stosur of Australia returns a shot to Edina Gallovits-Hall of Romania during their match at the U.S. Open women's singles tennis tournament in New York August 29, 2012.KEVIN LAMARQUE/Reuters
Andy Murray of Britain returns a shot to Ivan Dodig of Croatia during their match at the US Open men's singles tennis tournament in New York, August 29, 2012.ADAM HUNGER/Reuters
David Ferrer of Spain hits a return to Kevin Anderson of South Africa during their men's singles match at the U.S. Open tennis tournament in New York August 29, 2012.KEVIN LAMARQUE/Reuters
Petra Kvitova of the Czech Republic follows through in a shot to Alize Cornet of France during their women's singles match at the U.S. Open tennis tournament in New York August 29, 2012.KEVIN LAMARQUE/Reuters
Juan Martin Del Potro of Argentina hits a return to Florent Serra of France during their men's singles match at the U.S. Open tennis tournament in New York August 29, 2012.KEVIN LAMARQUE/Reuters
John Isner reacts during his match with Xavier Malisse of Belgium in the second round of play at the 2012 US Open tennis tournament, Wednesday, Aug. 29, 2012, in New York.Mel C. Evans/The Associated Press
Janko Tipsarevic of Serbia reacts during his match Guillaume Rufin in the second round of play at the 2012 US Open tennis tournament, Wednesday, Aug. 29, 2012, in New York.Paul Bereswill/The Associated Press
David Ferrer of Spain celebrates after defeating Kevin Anderson of South Africa in their men's singles match at the U.S. Open tennis tournament in New York August 29, 2012.KEVIN LAMARQUE/Reuters
Juan Martin Del Potro of Argentina celebrates after defeating Florent Serra of France during their men's singles match at the U.S. Open tennis tournament in New York August 29, 2012.KEVIN LAMARQUE/Reuters
Laura Robson of Britain reacts after defeating Kim Clijsters of Belgium during their women's singles match at the U.S. Open tennis tournament in New York August 29, 2012.EDUARDO MUNOZ/Reuters
Xavier Malisse of Belgium reacts after being defeated by John Isner of the U.S. in their men's singles match at the U.S. Open tennis tournament in New York August 29, 2012.JESSICA RINALDI/Reuters
Maria Sharapova of Russia blows a kiss to the crowd after defeating Lourdes Dominguez Lino of Spain during their match at the US Open women's singles tennis tournament in New York, August 29, 2012.ADAM HUNGER/Reuters
Kim Clijsters of Belgium waves to the gallery after her loss to Laura Robson of Britain in their women's singles match at the U.S. Open tennis tournament in New York August 29, 2012. The star-studded career of Clijsters ended in the place where it all began on Wednesday, just not quite in the way she would have wanted. The popular Belgian, who won as many friends for her bubbly, generous character as for her 'eyeballs-out' tennis and fighting spirit, saw her hopes of a fairytale goodbye dashed by British teenager Robson in the second round of the U.S. Open.JESSICA RINALDI/Reuters