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SHENZHEN, CHINA - JANUARY 09: Agnieszka Radwanska of Poland reacts during the singles final match against Alison Riske of the U.S. during Day 7 of 2016 WTA Shenzhen Open at Longgang Sports Center on January 9, 2016 in Shenzhen, China. (Photo by Zhong Zhi/Getty Images)

SHENZHEN, CHINA - JANUARY 09: Agnieszka Radwanska of Poland reacts during the singles final match against Alison Riske of the U.S. during Day 7 of 2016 WTA Shenzhen Open at Longgang Sports Center on January 9, 2016 in Shenzhen, China. (Photo by Zhong Zhi/Getty Images)
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