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Ashleigh Barty of Australia serves during the singles semifinal match against Jelena Ostapenko of Latvia at 2017 WTA Wuhan Open in Wuhan, capital of central China's Hubei Province, on Sept. 29, 2017. (Xinhua/Xiao Yijiu)

Ashleigh Barty of Australia serves during the singles semifinal match against Jelena Ostapenko of Latvia at 2017 WTA Wuhan Open in Wuhan, capital of central China's Hubei Province, on Sept. 29, 2017. (Xinhua/Xiao Yijiu)