Sam Groth of Australia returns a shot to Roger Federer of Switzerland in their men's singles match at the 2014 U.S. Open tennis tournament in New York, August 29, 2014. REUTERS/Shannon Stapleton ... more 
Sam Groth of Australia returns a shot to Roger Federer of Switzerland 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 8:59 PM EDT