
Ernests Gulbis of Latvia serves during the men's singles second round match against Juan Martin Del Potro of Argentina at the Championship Wimbledon 2017 in London, Britain, on July 6, 2017. Ernests Gulbis won 3-0. (Xinhua/Jin Yu)

Ernests Gulbis of Latvia serves during the men's singles second round match against Juan Martin Del Potro of Argentina at the Championship Wimbledon 2017 in London, Britain, on July 6, 2017. Ernests Gulbis won 3-0. (Xinhua/Jin Yu)