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PARIS, FRANCE - MAY 23: Grigor Dimitrov of Bulgaria lines up a forehand during the Men's Singles first round match against Viktor Troicki of Serbia on day two of the 2016 French Open at Roland Garros on May 23, 2016 in Paris, France. (Photo by Clive Brunskill/Getty Images)

PARIS, FRANCE - MAY 23:  Grigor Dimitrov of Bulgaria lines up a forehand during the Men's Singles first round match against Viktor Troicki of Serbia on day two of the 2016 French Open at Roland Garros on May 23, 2016 in Paris, France.  (Photo by Clive Brunskill/Getty Images)