Novak Djokovic plays his quarterfinal match at the French Open

Novak Djokovic plays his quarterfinal match at the French Open

Novak Djokovic of Serbia enlists the help of a ballboy to acknowledge the crowd after winning his French Open men's quarterfinal match against Tomas Berdych of the Czech Republic at Roland Garros in Paris on June 2, 2016. Djokovic defeated Berdych 6-3, 7-5, 6-3 to advance to the semifinals. Photo by David Silpa/UPI

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