Top tennis players from around the world compete in the 2018 Wimbledon championships in London running from June 25 to July 15, 2018. Photos by Hugo Philpott/UPI
Gulbis plays a forehand in his match against Zverev.
American Serena Williams serves in her match against French Kristina Mladenovic on the fifth day of championships on Friday. Williams defeated Mladenovic 7-5, 7-6.