LONDON, ENGLAND - JULY 14: Roger Federer of Switzerland plays a backand during the Gentlemen's Singles semi final match against Tomas Berdych of The Czech Republic on day eleven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Wimbledon at Wimbledon on July 14, 2017 in London, England. (Photo by Gareth Fuller - Pool/Getty Images)
