
Borna Coric of Croatia celebrates after winning the men's singles second round match against Alexander Zverev of Germany at the 2017 US Open in New York, the United States, Aug. 30, 2017. (Xinhua/Li Muzi)

Borna Coric of Croatia celebrates after winning the men's singles second round match against Alexander Zverev of Germany at the 2017 US Open in New York, the United States, Aug. 30, 2017. (Xinhua/Li Muzi)