LONDON, ENGLAND - JULY 01: Stanislas Wawrinka of Switzerland serves in his Gentlemens Singles Second Round match against Victor Estrella Burgos of Dominican Republic during day three of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 1, 2015 in London, England. (Photo by Ian Walton/Getty Images)
LONDON, ENGLAND - JULY 08: Andy Murray of Great Britain reacts in his Gentlemens Singles Quarter Final match against Vasek Pospisil of Canada during day nine of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 8, 2015 in London, England. (Photo by Ian Walton/Getty Images)
