Stanislas Wawrinka, of Switzerland, reacts after winning a game against Andy Murray, of Great Britain, during the quarterfinals of the 2013 U.S. Open
Stanislas Wawrinka, of Switzerland, reacts after winning a game against Andy Murray, of Great Britain, during the quarterfinals of the 2013 U.S. Open tennis tournament, Thursday, Sept. 5, 2013, in New York. (AP Photo/David Goldman) (David Goldman/AP)