Day 7 action from Flushing Meadows
The U.S. Open hits the half-way mark as the contenders separate themselves from the pretenders
Spectators watch a match between Julien Benneteau, of France, and Serbia's Novak Djokovic in the third round of play at the 2012 U.S. Open, Sunday, Sept. 2, 2012, in New York.Mike Groll/The Associated Press
Marion Bartoli of France reacts after defeating Petra Kvitova of the Czech Republic 1-6, 6-2, 6-0 during their match at the U.S. Open women's singles tennis tournament in New York, September 2, 2012.KENA BETANCUR/Reuters
Novak Djokovic of Serbia serves to Julien Benneteau of France during their men's singles match at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
Julien Benneteau of France hits a return to Novak Djokovic of Serbia during their men's singles match at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
Victoria Azarenka of Belarus hits a return to Anna Tatishvili of Georgia during their match at the U.S. Open women's singles tennis tournament in New York September 2, 2012. Azarenka won 6-2, 6-2.BILL KOSTROUN/Reuters
Lleyton Hewitt of Australia reacts after a missed shot against David Ferrer of Spain during their men's singles match at the U.S. Open in New York September 2, 2012.GARY HERSHORN/Reuters
Samantha Stosur, of Australia, competes against Laura Robson, of Great Britain, during their fourth round women's singles match in Arthur Ashe Stadium during the U.S. Open tennis tournament in New York, Sept. 2, 2012. Stosur defeated Robson with a score of 6-4, 6-4.BARTON SILVERMAN
Andy Roddick of the U.S. serves to Fabio Fognini of Italy during their men's singles match at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
David Ferrer of Spain hits a return to Lleyton Hewitt of Australia during their men's singles match at the U.S. Open in New York September 2, 2012.GARY HERSHORN/Reuters
Leonardo Mayer of Argentina jumps for a smash against compatriot Juan Martin Del Potro during their men's singles match at the U.S. Open in New York September 2, 2012.KENA BETANCUR/Reuters
Nadia Petrova, of Russia, reacts after losing a point to Maria Sharapova, of Russia, in the fourth round of play at the U.S. Open tennis tournament, Sunday, Sept. 2, 2012, in New York.Charles Krupa/The Associated Press
Andy Roddick of the U.S. serves to Fabio Fognini of Italy during their men's singles match at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
Laura Robson of Britain hits a return to Samantha Stosur of Australia during their women's singles match at the U.S. Open in New York September 2, 2012.GARY HERSHORN/Reuters
Lleyton Hewitt of Australia hits a return to David Ferrer of Spain during their men's singles match at the U.S. Open in New York September 2, 2012.GARY HERSHORN/Reuters
Maria Sharapova of Russia hits a return to Nadia Petrova of Russia during their match at the U.S. Open women's singles tennis tournament in New York, September 2, 2012.EDUARDO MUNOZ/Reuters
Argentina's Leonardo Mayer returns a shot to Argentina's Juan Martin Del Potro in the third round of play at the 2012 U.S. Open, Sunday, Sept. 2, 2012, in New York.Paul Bereswill/The Associated Press
Leonardo Mayer of Argentina serves to compatriot Juan Martin Del Potro during their men's singles match at the U.S. Open in New York September 2, 2012.KENA BETANCUR/Reuters
Andy Roddick returns a shot to Italy's Fabio Fognini in the third round of play at the 2012 U.S. Open, Sunday, Sept. 2, 2012, in New York.Mel C. Evans/The Associated Press
Novak Djokovic of Serbia celebrates after defeating Julien Benneteau of France during their men's singles match at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
Andy Roddick of the U.S. gestures to his box after defeating Fabio Fognini of Italy during their men's singles match at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
Steve Johnson of the U.S. falls after missing a shot by Richard Gasquet of France during their men's singles match at the U.S. Open in New York September 2, 2012.KENA BETANCUR/Reuters
Fabio Fognini of Italy lies on the court after falling during his men's singles match against Andy Roddick of the U.S. at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
Juan Martin Del Potro covers his head after a bad shot against compatriot Leonardo Mayer during their men's singles match at the U.S. Open in New York September 2, 2012.KENA BETANCUR/Reuters
Fabio Fognini of Italy reacts after a missed shot against Andy Roddick of the U.S. during their men's singles match at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
Andy Roddick of the U.S. sports a pair of tennis shoes featuring a Stars and Stripes design during his men's singles match against Fabio Fognini of Italy at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters
Lleyton Hewitt (R) of Australia congratulates David Ferrer of Spain after their men's singles match at the U.S. Open in New York September 2, 2012.GARY HERSHORN/Reuters
Andy Roddick hugs Italy's Fabio Fognini after their match in the third round of play at the 2012 US Open, Sunday, Sept. 2, 2012, in New York. Roddick won the match.Mel C. Evans/The Associated Press
Canadian Prime Minister Stephen Harper watches from the gallery at the U.S. Open in New York September 2, 2012.EDUARDO MUNOZ/Reuters