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ZHUHAI, CHINA - NOVEMBER 06: Petra Kvitova of the Czech Republic in action against Elina Svitolina of Ukraine (not seen) during the women's singles final match of the 2016 WTA Elite Trophy Zhuhai at Zhuhai Hengqin International Tennis Centre in Zhuhai, China on November 6, 2016. (Photo by Zhong Zhenbin/Anadolu Agency/Getty Images)

ZHUHAI, CHINA - NOVEMBER 06: Petra Kvitova of the Czech Republic in action against Elina Svitolina of Ukraine (not seen) during the women's singles final match of the 2016 WTA Elite Trophy Zhuhai at Zhuhai Hengqin International Tennis Centre in Zhuhai, China on November 6, 2016. (Photo by Zhong Zhenbin/Anadolu Agency/Getty Images)