Roger Federer of Switzerland celebrates defeating Sam Groth of Australia in their men's singles match at the 2014 U.S. Open tennis tournament in New York, August 29, 2014. REUTERS/Shannon Stapleton ... more 
Roger Federer of Switzerland celebrates defeating Sam Groth of Australia in their men's singles match at the 2014 U.S. Open tennis tournament in New York, August 29, 2014. REUTERS/Shannon Stapleton (UNITED STATES - Tags: SPORT TENNIS) less 
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Reuters | Photo By SHANNON STAPLETON / REUTERS
Fri, Aug 29, 2014 10:21 PM EDT