Mandatory Credit: Photo by Susan Mullane-USA TODAY Sports/Sipa USA/REX/Shutterstock (9761370h) Novak Djokovic (SRB) leaves the court after three sets in his match against Rafael Nadal (ESP) on day 11 at All England Lawn and Croquet Club Wimbledon Tennis Championships, Day 11, The All England Lawn Tennis and Croquet Club, London, UK - 13 Jul 2018