New York, USA
Roger Federer, of Switzerland, chases down a shot to return to Tommy Robredo, of Spain, during the fourth round of the 2013 U.S.
New York, USA
Li Na, of China, returns a shot to Jelena Jankovic, of Serbia, during a fourth round match at the U.S. Open tennis tournament.
New York, USA
Rafael Nadal, of Spain, reacts after defeating Ivan Dodig, of Croatia, during the third round of the 2013 U.S. Open tennis tournament.
New York, USA
Petra Kvitova, of the Czech Republic, reacts after a lost point to Alison Riske during the third round of the 2013 U.S. Open tennis tournament.
New York, USA
Simona Halep, of Romania, reacts after beating Maria Kirilenko, of Russia, during the third round of the 2013 U.S. Open tennis tournament.
New York, USA
Roberta Vinci, of Italy, reacts after beating Camila Giorgi, of Italy, during the fourth round of the 2013 U.S. Open.
New York, USA
Serena Williams, left, returns a shot over Venus Williams during a doubles match against Raquel Kops-Jones and Abigail Spears of the 2013 U.S. Open.
New York, USA
Mike Bryan, left, and Bob Bryan celebrate after beating Daniel Nestor and Vasek Pospisil, of Canada, in a doubles match at the 2013 U.S. Open.