Gael Monfils, of France, returns a shot to Roger Federer, of Switzerland, during the quarterfinals of the U.S. Open tennis tournament, Thursday, Sept. 4, 2014, in New York. (AP Photo/John Minchillo)
Gael Monfils, of France, returns a shot to Roger Federer, of Switzerland, during the quarterfinals of the U.S. Open tennis tournament, Thursday, Sept. 4, 2014, in New York. (AP Photo/John Minchillo)