Stan Wawrinka of Switzerland celebrates a point during the men's singles match against Andy Murray of Great Britain on day six of the Barclays ATP...
{"Image ImageDescription": "LONDON, ENGLAND - NOVEMBER 20:  Stan Wawrinka of Switzerland celebrates a point during the men's singles match against Andy Murray of Great Britain on day six of the Barclays ATP World Tour Finals at the O2 Arena on November 20, 2015 in London, England.  (Photo by Julian Finney/Getty Images)", "Image Copyright": "2015 Getty Images"}