![Germany's Mona Barthel plays a return to China's Lin Zhu during the women's singles first round match on day two of the Wimbledon Tennis Championships in London, Tuesday June 29, 2021. (AP Germany's Mona Barthel plays a return to China's Lin Zhu during the women's singles first round match on day two of the Wimbledon Tennis Championships in London, Tuesday June 29, 2021. (AP](https://c8.alamy.com/comp/2ME90DE/germanys-mona-barthel-plays-a-return-to-chinas-lin-zhu-during-the-womens-singles-first-round-match-on-day-two-of-the-wimbledon-tennis-championships-in-london-tuesday-june-29-2021-ap-photoalastair-grant-2ME90DE.jpg)
Germany's Mona Barthel plays a return to China's Lin Zhu during the women's singles first round match on day two of the Wimbledon Tennis Championships in London, Tuesday June 29, 2021. (AP
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Mona Barthel (GER) Tennis - Wimbledon 2021 - London - Grand Slam ITF / ATP / WTA - AELTC - Great Britain - 2021 | Juergen Hasenkopf Photography
![Mona Barthel of Germany in action at the Ladies' Singles - Wimbledon Championships 2017 Stock Photo - Alamy Mona Barthel of Germany in action at the Ladies' Singles - Wimbledon Championships 2017 Stock Photo - Alamy](https://c8.alamy.com/comp/K130Y5/mona-barthel-of-germany-in-action-at-the-ladies-singles-wimbledon-K130Y5.jpg)
Mona Barthel of Germany in action at the Ladies' Singles - Wimbledon Championships 2017 Stock Photo - Alamy
![INDIAN WELLS, CA - MARCH 09: Mona Barthel (GER) hits a backhand during the second round of the BNP Paribas Open on March 09, 2019, at the Indian Wells Tennis Gardens in INDIAN WELLS, CA - MARCH 09: Mona Barthel (GER) hits a backhand during the second round of the BNP Paribas Open on March 09, 2019, at the Indian Wells Tennis Gardens in](https://c8.alamy.com/comp/2NTT38E/indian-wells-ca-march-09-mona-barthel-ger-hits-a-backhand-during-the-second-round-of-the-bnp-paribas-open-on-march-09-2019-at-the-indian-wells-tennis-gardens-in-indian-wells-ca-photo-by-adam-davisicon-sportswire-icon-sportswire-via-ap-images-2NTT38E.jpg)