Dubai, United Arab Emirates
Nikolay Davydenko of Russia serves to Roger Federer of Switzerland during their men's singles quarter-final...
Nikolay Davydenko of Russia serves to Roger Federer of Switzerland during their men's singles quarter-final match at the ATP Dubai Tennis Championships, February 28, 2013. REUTERS/Jumana El Heloueh (UNITED ARAB EMIRATES - Tags: SPORT TENNIS TPX IMAGES OF THE DAY)