Roger Federer of Switzerland returns the ball to Lukas Rosol of the Czech Republic during their men's singles match at the ATP Dubai Tennis Championships, February 27, 2014. REUTERS/Saleh Salem ... more 
Roger Federer of Switzerland returns the ball to Lukas Rosol of the Czech Republic during their men's singles match at the ATP Dubai Tennis Championships, February 27, 2014. REUTERS/Saleh Salem (UNITED ARAB EMIRATES - Tags: SPORT TENNIS) less 
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Reuters | Photo By SALEH SALEM / REUTERS
Thu, Feb 27, 2014 3:08 PM EST