![Aryna Sabalenka of Belarus during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Rob Prange / Aryna Sabalenka of Belarus during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Rob Prange /](https://c8.alamy.com/comp/2FA59M6/aryna-sabalenka-of-belarus-during-her-second-round-match-at-the-2021-porsche-tennis-grand-prix-wta-500-tournament-on-april-22-2021-at-porsche-arena-in-stuttgart-germany-photo-rob-prange-spain-dppi-dppi-livemedia-2FA59M6.jpg)
Aryna Sabalenka of Belarus during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Rob Prange /
![Marketa Vondrousova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Marketa Vondrousova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo](https://c8.alamy.com/comp/2FA5A5W/marketa-vondrousova-of-the-czech-republic-during-her-second-round-match-at-the-2021-porsche-tennis-grand-prix-wta-500-tournament-on-april-22-2021-at-porsche-arena-in-stuttgart-germany-photo-rob-prange-spain-dppi-dppi-livemedia-2FA5A5W.jpg)
Marketa Vondrousova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo
![Karolina Pliskova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Karolina Pliskova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo](https://c8.alamy.com/comp/2FA595J/karolina-pliskova-of-the-czech-republic-during-her-second-round-match-at-the-2021-porsche-tennis-grand-prix-wta-500-tournament-on-april-22-2021-at-porsche-arena-in-stuttgart-germany-photo-rob-prange-spain-dppi-dppi-livemedia-2FA595J.jpg)
Karolina Pliskova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo
![Jelena Ostapenko of Latvia in action during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Jelena Ostapenko of Latvia in action during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo](https://c8.alamy.com/comp/2FA595D/jelena-ostapenko-of-latvia-in-action-during-her-second-round-match-at-the-2021-porsche-tennis-grand-prix-wta-500-tournament-on-april-22-2021-at-porsche-arena-in-stuttgart-germany-photo-rob-prange-spain-dppi-dppi-livemedia-2FA595D.jpg)
Jelena Ostapenko of Latvia in action during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo
![Marketa Vondrousova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Marketa Vondrousova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo](https://c8.alamy.com/comp/2FA5A68/marketa-vondrousova-of-the-czech-republic-during-her-second-round-match-at-the-2021-porsche-tennis-grand-prix-wta-500-tournament-on-april-22-2021-at-porsche-arena-in-stuttgart-germany-photo-rob-prange-spain-dppi-dppi-livemedia-2FA5A68.jpg)
Marketa Vondrousova of the Czech Republic during her second-round match at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo
![Yifan Xu and Shuai Zhang of China playing doubles at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Rob Yifan Xu and Shuai Zhang of China playing doubles at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Rob](https://c8.alamy.com/comp/2FA5B11/yifan-xu-and-shuai-zhang-of-china-playing-doubles-at-the-2021-porsche-tennis-grand-prix-wta-500-tournament-on-april-22-2021-at-porsche-arena-in-stuttgart-germany-photo-rob-prange-spain-dppi-dppi-livemedia-2FA5B11.jpg)
Yifan Xu and Shuai Zhang of China playing doubles at the 2021 Porsche Tennis Grand Prix, WTA 500 tournament on April 22, 2021 at Porsche Arena in Stuttgart, Germany - Photo Rob
![Germany's Dinah Pfizenmaier plays against Columbia's Castano during the WTA Porsche Tennis Grand..., Stock Photo, Picture And Rights Managed Image. Pic. PAH-38961431 | agefotostock Germany's Dinah Pfizenmaier plays against Columbia's Castano during the WTA Porsche Tennis Grand..., Stock Photo, Picture And Rights Managed Image. Pic. PAH-38961431 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/c01bfaca1aa58b6f449fcf641a781d71/pah-38961431.jpg)