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Agnieszka Radwanska of Poland hits a return during the single's first round match against Mona Barthel of Germany at the 2018 WTA Qatar Open in Doha, Qatar, on Feb. 12, 2018. Radwanska won 2-1. (Xinhua/Nikku)
Agnieszka Radwanska of Poland hits a return during the single's first round match against Mona Barthel of Germany at the 2018 WTA Qatar Open in Doha, Qatar, on Feb. 12, 2018. Radwanska won 2-1. (Xinhua/Nikku)