Stanislas Wawrinka, of Switzerland, reacts after defeating Andy Murray, of Great Britain, during the quarterfinals of the 2013 U.S. Open tennis tournament,
Stanislas Wawrinka, of Switzerland, reacts after defeating 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)