Carla Suarez Navarro of Spain hits a return during the women's singles first round match against Zhang Shuai of China at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020. (Photos: Xinhua)

Zhang Shuai of China reacts during the women's singles first round match against Carla Suarez Navarro of Spain at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.

Zhang Shuai of China hits a return during the women's singles first round match against Carla Suarez Navarro of Spain at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.

Zhang Shuai of China serves during the women's singles first round match against Carla Suarez Navarro of Spain at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.

Zhang Shuai of China hits a return during the women's singles first round match against Carla Suarez Navarro of Spain at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.

Carla Suarez Navarro of Spain hits a return during the women's singles first round match against Zhang Shuai of China at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.

Carla Suarez Navarro of Spain celebrates during the women's singles first round match against Zhang Shuai of China at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.

Zhang Shuai of China hits a return during the women's singles first round match against Carla Suarez Navarro of Spain at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.

Carla Suarez Navarro of Spain hits a return during the women's singles first round match against Zhang Shuai of China at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.

Carla Suarez Navarro of Spain hits a return during the women's singles first round match against Zhang Shuai of China at the 2020 WTA Qatar Open tennis tournament in Doha, Qatar, Feb. 24, 2020.