Milos Raonic of Canada returns the ball during the first round of men's singles match between Milos Raonic of Canada and Frances Tiafoe of the United States at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Milos Raonic of Canada serves during the first round of men's singles match between Milos Raonic of Canada and Frances Tiafoe of the United States at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Frances Tiafoe of the United States returns the ball during the first round of men's singles match between Milos Raonic of Canada and Frances Tiafoe of the United States at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Victoria Azarenka of Belarus returns the ball during the first round of women's singles match between Victoria Azarenka of Belarus and Magna Linette of Poland at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Madison Keys of the United States returns the ball during the first round of women's singles match between Venus Williams of the United States and Madison Keys of the United States at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Magna Linette of Poland returns the ball during the first round of women's singles match between Victoria Azarenka of Belarus and Magna Linette of Poland at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Venus Williams of the United States returns the ball during the first round of women's singles match between Venus Williams of the United States and Madison Keys of the United States at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Madison Keys of the United States returns the ball during the first round of women's singles match between Venus Williams of the United States and Madison Keys of the United States at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Magna Linette of Poland returns the ball during the first round of women's singles match between Victoria Azarenka of Belarus and Magna Linette of Poland at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Venus Williams of the United States returns the ball during the first round of women's singles match between Venus Williams of the United States and Madison Keys of the United States at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Zhang Zhizhen of China serves during the first round of men's singles match between Zhang Zhizhen of China and Thanasi Kokkinakis of Australia at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Thanasi Kokkinakis of Australia returns the ball during the first round of men's singles match between Zhang Zhizhen of China and Thanasi Kokkinakis of Australia at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Alexis Galarneau of Canada returns the ball during the first round of men's singles match between Alexis Galarneau of Canada and Francisco Cerundolo of Argentina at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Zhang Zhizhen of China returns the ball during the first round of men's singles match between Zhang Zhizhen of China and Thanasi Kokkinakis of Australia at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Jiri Lehecka of the Czech Republic returns the ball during the first round of men's singles match between Jiri Lehecka of the Czech Republic and Brandon Nakashima of the United States at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Alexis Galarneau of Canada celebrates during the first round of men's singles match between Alexis Galarneau of Canada and Francisco Cerundolo of Argentina at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Zhang Zhizhen of China returns the ball during the first round of men's singles match between Zhang Zhizhen of China and Thanasi Kokkinakis of Australia at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Thanasi Kokkinakis of Australia celebrates victory after the first round of men's singles match between Zhang Zhizhen of China and Thanasi Kokkinakis of Australia at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Francisco Cerundolo of Argentina returns the ball during the first round of men's singles match between Alexis Galarneau of Canada and Francisco Cerundolo of Argentina at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Brandon Nakashima of the United States returns the ball during the first round of men's singles match between Jiri Lehecka of the Czech Republic and Brandon Nakashima of the United States at the 2023 National Bank Open in Toronto, Canada, on Aug. 7, 2023. (Photo by Zou Zheng/Xinhua)
Karolina Pliskova of the Czech Republic returns the ball during the first round of women's singles match between Karolina Pliskova of the Czech Republic and Zhu Lin of China at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Zhu Lin of China returns the ball during the first round of women's singles match between Karolina Pliskova of the Czech Republic and Zhu Lin of China at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Karolina Pliskova of the Czech Republic returns the ball during the first round of women's singles match between Karolina Pliskova of the Czech Republic and Zhu Lin of China at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
Zhu Lin of China returns the ball during the first round of women's singles match between Karolina Pliskova of the Czech Republic and Zhu Lin of China at the 2023 National Bank Open in Montreal, Canada, on Aug. 7, 2023. (Photo by Andrew Soong/Xinhua)
