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Belinda Bencic of Switzerland celebrates during the women's singles semifinal against Elina Svitolina of Ukraine at the WTA Finals Tennis Tournament in Shenzhen, south China's Guangdong Province, Nov. 2, 2019. (Xinhua/Liang Xu)

Belinda Bencic of Switzerland celebrates during the women's singles semifinal against Elina Svitolina of Ukraine at the WTA Finals Tennis Tournament in Shenzhen, south China's Guangdong Province, Nov. 2, 2019. (Xinhua/Liang Xu)