MONTREAL, ON - JULY 29: Angelique Kerber of Germany hits a return against Darya Kasatkina of Russia during day five of the Rogers Cup at Uniprix Stadium on July 29, 2016 in Montreal, Quebec, Canada. Angelique Kerber defeated Darya Kasatkina 2-6, 2-6. (Photo by Minas Panagiotakis/Getty Images)
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