LONDON, ENGLAND - JULY 01: Kei Nishikori of Japan during practice at Wimbledon on July 1, 2017 in London, England. (Photo by Shaun Botterill/Getty Images)
LONDON, ENGLAND - JULY 01: Kei Nishikori of Japan during practice at Wimbledon on July 1, 2017 in London, England. (Photo by Shaun Botterill/Getty Images)