Wang Qiang of China hits a return during the women's singles final match against Dayana Yastremska of Ukraine at 2018 WTA Hong Kong Tennis Open in Hong Kong, south China, Oct. 14, 2018. Wang Qiang lost 0-2. (Photos: Xinhua)

Dayana Yastremska of Ukraine kisses her trophy after winning the women's singles final match against Wang Qiang of China at 2018 WTA Hong Kong Tennis Open in Hong Kong, south China, Oct. 14, 2018.

Dayana Yastremska of Ukraine returns the ball during the women's singles final match against Wang Qiang of China at 2018 WTA Hong Kong Tennis Open in Hong Kong, south China, Oct. 14, 2018. Dayana Yastremska won 2-0 to claim the title.

Wang Qiang of China hits a return during the women's singles final match against Dayana Yastremska of Ukraine at 2018 WTA Hong Kong Tennis Open in Hong Kong, south China, Oct. 14, 2018. Wang Qiang lost 0-2.

Dayana Yastremska of Ukraine celebrates scoring during the women's singles final match against Wang Qiang of China at 2018 WTA Hong Kong Tennis Open in Hong Kong, south China, Oct. 14, 2018. Dayana Yastremska won 2-0 to claim the title.

Wang Qiang of China hits a return during the women's singles final match against Dayana Yastremska of Ukraine at 2018 WTA Hong Kong Tennis Open in Hong Kong, south China, Oct. 14, 2018. Wang Qiang lost 0-2.