
Angelique Kerber of Germany serves during the women's singles first round match against Irina Falconi of the United States at the Championship Wimbledon 2017 in London, Britain, on July 4, 2017. Kerber won 2-0. (Xinhua/Jin Yu)

Angelique Kerber of Germany serves during the women's singles first round match against Irina Falconi of the United States at the Championship Wimbledon 2017 in London, Britain, on July 4, 2017. Kerber won 2-0. (Xinhua/Jin Yu)