Cori Gauff celebrates victory in her match against Polona Hercog

Cori Gauff celebrates victory in her match against Polona Hercog

American Cori Gauff questions a call in her third round match with Slovakian Polona Hercog at Wimbledon on Friday, July 5, 2019. Gauff won the match 3-6,7-6,7-5. Photo by Hugo Philpott/UPI