Switzerland's Stanislas Wawrinka (L) returns a ball next to Roger Federer (2R) during their Davis Cup quarter-final tennis match against Andrey Golubev (2L) and Aleksandr Nedovyvesov of Kazakhstan in ... more 
Switzerland's Stanislas Wawrinka (L) returns a ball next to Roger Federer (2R) during their Davis Cup quarter-final tennis match against Andrey Golubev (2L) and Aleksandr Nedovyvesov of Kazakhstan in Geneva April 5, 2014. REUTERS/Denis Balibouse (SWITZERLAND - Tags: SPORT TENNIS) less 
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Reuters | Photo By DENIS BALIBOUSE / REUTERS
Sat, Apr 5, 2014 8:01 AM EDT