Wang Yafan of China competes during the women's singles second round match with Sloane Stephens of the United States at the 2019 Wimbledon Tennis Championships in London, Britain, on July 4, 2019. (Photos: Xinhua)

Wang Qiang of China competes during the women's singles second round match between Wang Qiang of China and Tamara Zidansek of Slovenia at the 2019 Wimbledon Tennis Championships in London, Britain, July 4, 2019.

Tamara Zidansek of Slovenia competes during the women's singles second round match between Wang Qiang of China and Tamara Zidansek of Slovenia at the 2019 Wimbledon Tennis Championships in London, Britain, July 4, 2019.

Wang Qiang of China competes during the women's singles second round match between Wang Qiang of China and Tamara Zidansek of Slovenia at the 2019 Wimbledon Tennis Championships in London, Britain, July 4, 2019.

Wang Qiang of China competes during the women's singles second round match between Wang Qiang of China and Tamara Zidansek of Slovenia at the 2019 Wimbledon Tennis Championships in London, Britain, July 4, 2019.

Wang Qiang of China competes during the women's singles second round match between Wang Qiang of China and Tamara Zidansek of Slovenia at the 2019 Wimbledon Tennis Championships in London, Britain, July 4, 2019.