LONDON, ENGLAND - JUNE 30: Roger Federer (R) of Switzerland shakes hands with his opponent after winning his Gentlemen's Singles first round match against Damir Dzumhur of Bosnia and Herzegovina during day two of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 30, 2015 in London, England. (Photo by Shaun Botterill/Getty Images)
