![(SP)CANADA-TORONTO-TENNIS-ROGERS CUP-MEN'S SINGLES-QUARTERFINALS](137382845_15339701025621n.jpg)
Stefanos Tsitsipas of Greece returns the ball against Alexander Zverev of Germany during the quarterfinal match of men's singles at the 2018 Rogers Cup in Toronto, Canada, Aug. 10, 2018. Stefanos Tsitsipas of Greece won 2-1. (Xinhua/Zou Zheng)?
Stefanos Tsitsipas of Greece returns the ball against Alexander Zverev of Germany during the quarterfinal match of men's singles at the 2018 Rogers Cup in Toronto, Canada, Aug. 10, 2018. Stefanos Tsitsipas of Greece won 2-1. (Xinhua/Zou Zheng)?