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2016 Qatar Total Open Quarterfinal | Agnieszka Radwanska vs Roberta Vinci | WTA Highlights - YouTube
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Spain's Rafael Nadal returns the ball during a match against Andrey Kuznetsov of Russia at Qatar Open tennis tournament Thursday, Jan. 7, 2016, in Doha, Qatar. (AP Photo/Alexandra Panagiotidou Stock Photo - Alamy
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