LONDON, ENGLAND - JULY 06: Roger Federer of Switzerland in action during his quarter final match against Marin Cilic of Croatia at Wimbledon on July 6, 2016 in London, England. (Photo by Visionhaus/Corbis via Getty Images)
LONDON, ENGLAND - JULY 06: Roger Federer of Switzerland in action during his quarter final match against Marin Cilic of Croatia at Wimbledon on July 6, 2016 in London, England. (Photo by Visionhaus/Corbis via Getty Images)