Novak Djokovic of Serbia hits a return during the first round of men's singles match against Mirza Basic of Bosnia and Herzegovina at the 2018 Rogers Cup in Toronto, Canada, Aug. 7, 2018. Novak Djokovic won 2-0. (Xinhua/Zou Zheng)
Novak Djokovic of Serbia hits a return during the first round of men's singles match against Mirza Basic of Bosnia and Herzegovina at the 2018 Rogers Cup in Toronto, Canada, Aug. 7, 2018. Novak Djokovic won 2-0. (Xinhua/Zou Zheng)