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France's Gael Monfils (L) celebrates his victory against Germany's Philipp Kohlschreiber during their men's singles third round match on day six of the Australian Open tennis tournament in Melbourne on January 21, 2017. / AFP / WILLIAM WEST / IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE (Photo credit should read WILLIAM WEST/AFP/Getty Images)

France's Gael Monfils (L) celebrates his victory against Germany's Philipp Kohlschreiber during their men's singles third round match on day six of the Australian Open tennis tournament in Melbourne on January 21, 2017. / AFP / WILLIAM WEST / IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE        (Photo credit should read WILLIAM WEST/AFP/Getty Images)