LONDON, ENGLAND - NOVEMBER 17: Pablo Carreno Busta of Spain in action against Grigor Dimitrov (6) of Bulgaria in their Group Pete Sampras match today - Dimitrov def Carreno Busta 6-1, 6-1 at O2 Arena on November 17, 2017 in London, England. (Photo by Craig Mercer - CameraSport via Getty Images)
