Maria Sharapova of Russia in action against Ana Ivanovic of Serbia in their third round match during day six of the Internazionali BNL d'Italia 2012 at the Foro Italico Tennis Centre on May 17, 2012 in Rome, Italy
Ana Ivanovic of Serbia reacts in her first round match against Lucie Hradecka of the Czech Republic during day one of the 2015 Australian Open at Melbourne Park on January 19, 2015 in Melbourne, Australia.
Roger Federer of Switzerland gestures to the crowd after defeating World number one Novak Djokovic of Serbia during their final match on the fifth day of the ATP Dubai Duty Free Tennis Championships on February 28, 2015 in Dubai.
Czech Republic's Barbora Zahlavova Strycova hits a return to France's Stephanie Foretz Gacon during their Women's Singles 1st Round tennis match of the French Open tennis tournament at the Roland Garros stadium, on May 28, 2012 in Paris.
Agnieszka Radwanska of Poland serves in her semi final match against Na Li of China during day five of the Sydney International at Sydney Olympic Park Tennis Centre on January 10, 2013 in Sydney, Australia.
Russia's Maria Sharapova reacts after winning over Czech Republic's Petra Kvitova during their Women's Singles semifinal tennis match of the French Open tennis tournament at the Roland Garros stadium, on June 7, 2012 in Paris.