Stan Wawrinka of Switzerland returns the ball during his first round match against Albert Ramos-Vinolas of Spain in the U.S. Open Tennis tournament in New York, Tuesday, Sept. 1, 2015. (AP Photo/Kathy... more 
Stan Wawrinka of Switzerland returns the ball during his first round match against Albert Ramos-Vinolas of Spain in the U.S. Open Tennis tournament in New York, Tuesday, Sept. 1, 2015. (AP Photo/Kathy Willens) less 
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Associated Press | Photo By Kathy Willens
Tue, Sep 1, 2015 11:09 PM EDT