Andrea Petkovic beats Zhang Shuai 2-1 at Championship Wimbledon 2018

Andrea Petkovic of Germany hits a return during the women's singles first round match against Zhang Shuai of China at the Championship Wimbledon 2018 in London, Britain, on July 2, 2018. Andrea Petkovic won 2-1. (Photos: Xinhua)

Andrea Petkovic of Germany hits a return during the women's singles first round match against Zhang Shuai of China at the Championship Wimbledon 2018 in London, Britain, on July 2, 2018. Andrea Petkovic won 2-1.

Andrea Petkovic of Germany hits a return during the women's singles first round match against Zhang Shuai of China at the Championship Wimbledon 2018 in London, Britain, on July 2, 2018. Andrea Petkovic won 2-1.

Zhang Shuai of China hits a return during the women's singles first round match against Andrea Petkovic of Germany at the Championship Wimbledon 2018 in London, Britain, on July 2, 2018. Zhang Shuai lost 1-2.

Zhang Shuai of China hits a return during the women's singles first round match against Andrea Petkovic of Germany at the Championship Wimbledon 2018 in London, Britain, on July 2, 2018. Zhang Shuai lost 1-2.

Andrea Petkovic of Germany competes during the women's singles first round match against Zhang Shuai of China at the Championship Wimbledon 2018 in London, Britain, on July 2, 2018. Andrea Petkovic won 2-1.