
Ernests Gulbis of Latvia serves during the men's singles third round match against Novak Djokovic of Serbia at the Championship Wimbledon 2017 in London, Britain, on July 8, 2017. Novak Djokovic won 3-0. (Xinhua/Jin Yu)

Ernests Gulbis of Latvia serves during the men's singles third round match against Novak Djokovic of Serbia at the Championship Wimbledon 2017 in London, Britain, on July 8, 2017. Novak Djokovic won 3-0. (Xinhua/Jin Yu)