
Barbora Krejcikova of the Czech Republic returns the ball against Magda Linette of Poland during the first round of women's singles qualifying match at the 2017 Rogers Cup in Toronto, Canada, Aug. 5, 2017. (Xinhua/Zou Zheng)

Barbora Krejcikova of the Czech Republic returns the ball against Magda Linette of Poland during the first round of women's singles qualifying match at the 2017 Rogers Cup in Toronto, Canada, Aug. 5, 2017. (Xinhua/Zou Zheng)