LONDON, ENGLAND - NOVEMBER 12: (L-R) Kei Nishikori, Novak Djokovic, Andy Murray, Roger Federer, Stan Wawrinka, Rafael Nadal, Tomas Berdych and David Ferrer celebrate with Moet & Chandon and raise a toast to the official launch of the 2015 Barclays ATP World Tour Finals at City Hall on November 12, 2015 in London, England. (Photo by David M. Benett/Dave Benett / Getty Images for Moet & Chandon)
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Getty Images Entertainment David M. Benett