Viktor Troicki 's wants more drugs testing in tennis . Reacting to the debate over Viktor Troicki 's punishment . Federer beats Roger Federer at Troicki . `` I do believe that when you are requested for a sample , you have to give the sample . Roger Federer into semifinals after beating Novak Djokovic .
Viktor Troicki 's wants more drugs testing in tennis . Reacting to the debate over Viktor Troicki 's punishment . Federer beats Roger Federer at Troicki . Roger Federer into semifinals after beating Novak Djokovic .