
Roger Federer of Switzerland celebrates after scoring during the men's singles second round match against Dusan Lajovic of Serbia at the Championship Wimbledon 2017 in London, Britain, on July 6, 2017. Roger Federer won 3-0. (Xinhua/Jin Yu)

Roger Federer of Switzerland celebrates after scoring during the men's singles second round match against Dusan Lajovic of Serbia at the Championship Wimbledon 2017 in London, Britain, on July 6, 2017. Roger Federer won 3-0. (Xinhua/Jin Yu)