Alexander Zverev competes during the men's singles first round match between Tallon Griekspoor of the Netherlands and Alexander Zverev of Germany at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Tallon Griekspoor competes during the men's singles first round match between Tallon Griekspoor of the Netherlands and Alexander Zverev of Germany at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Alexander Zverev reacts during the men's singles first round match between Tallon Griekspoor of the Netherlands and Alexander Zverev of Germany at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Alexander Zverev competes during the men's singles first round match between Tallon Griekspoor of the Netherlands and Alexander Zverev of Germany at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Tallon Griekspoor competes during the men's singles first round match between Tallon Griekspoor of the Netherlands and Alexander Zverev of Germany at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Alexander Zverev reacts during the men's singles first round match between Tallon Griekspoor of the Netherlands and Alexander Zverev of Germany at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Andy Murray competes during the men's singles first round match between Andy Murray of Britain and Lorenzo Sonego of Italy at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Lorenzo Sonego competes during the men's singles first round match between Andy Murray of Britain and Lorenzo Sonego of Italy at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Lorenzo Sonego competes during the men's singles first round match between Andy Murray of Britain and Lorenzo Sonego of Italy at the National Bank Open tennis tournament in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Peyton Stearns of the United States serves during the women's singles first round match against Leylah Fernandez of Canada at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Leylah Fernandez of Canada returns the ball during the women's singles first round match against Peyton Stearns of the United States at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Peyton Stearns of the United States returns the ball during the women's singles first round match against Leylah Fernandez of Canada at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Bianca Andreescu competes during the women's singles first round match between Bianca Andreescu of Canada and Camila Giorgi of Italy at the National Bank Open tennis tournament in Montreal, Canada, on Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Camila Giorgi competes during the women's singles first round match between Bianca Andreescu of Canada and Camila Giorgi of Italy at the National Bank Open tennis tournament in Montreal, Canada, on Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Camila Giorgi competes during the women's singles first round match between Bianca Andreescu of Canada and Camila Giorgi of Italy at the National Bank Open tennis tournament in Montreal, Canada, on Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Bianca Andreescu competes during the women's singles first round match between Bianca Andreescu of Canada and Camila Giorgi of Italy at the National Bank Open tennis tournament in Montreal, Canada, on Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Camila Giorgi competes during the women's singles first round match between Bianca Andreescu of Canada and Camila Giorgi of Italy at the National Bank Open tennis tournament in Montreal, Canada, on Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Max Purcell of Australia returns the ball against Felix Auger-Aliassime of Canada during a men's singles first round match at the 2023 National Bank Open in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Felix Auger-Aliassime of Canada returns the ball against Max Purcell of Australia during a men's singles first round match at the 2023 National Bank Open in Toronto, Canada, on Aug. 8, 2023. (Photo by Zou Zheng/Xinhua)
Zheng Qinwen of China returns the ball during a women's singles first round match against Marta Kostyuk of Ukraine at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Zheng Qinwen of China returns the ball during a women's singles first round match against Marta Kostyuk of Ukraine at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Zhang Shuai of China returns the ball during a women's singles first round match against Anna Blinkova of Russia at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Marta Kostyuk of Ukraine returns the ball during a women's singles first round match against Zheng Qinwen of China at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Anna Blinkova of Russia returns the ball during a women's singles first round match against Zhang Shuai of China at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
Zheng Qinwen of China returns the ball during a women's singles first round match against Marta Kostyuk of Ukraine at the 2023 National Bank Open in Montreal, Canada, Aug. 8, 2023. (Photo by Andrew Soong/Xinhua)
