Kei Nishikori Versus Ernest Gulbis

Japan's Kei Nishikori returns the ball in his match against Latvian Ernest Gulbis in the fourth round of the 2018 Wimbledon championships in London on July 9, 2018. Nishikori defeated Gulbis 4-6, 7-6, 7-6, 6-1. Photo by Hugo Philpott/UPI