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Italy's Roberta Vinci reacts while playing against Coco Vandeweghe of the US in their women's singles first round match on day one of the Australian Open tennis tournament in Melbourne on January 16, 2017. / AFP / WILLIAM WEST / --IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE-- (Photo credit should read WILLIAM WEST/AFP/Getty Images)

Italy's Roberta Vinci reacts while playing against Coco Vandeweghe of the US in their women's singles first round match on day one of the Australian Open tennis tournament in Melbourne on January 16, 2017. / AFP / WILLIAM WEST / --IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE--        (Photo credit should read WILLIAM WEST/AFP/Getty Images)