Stadium: Court 1 Round: 19 Ground: Clay
| Australian Open Women | 2021/01/11 12:55 | Stefanie Voegele v Katharina Gerlach | 3-6,4-6 |
| WTA Stuttgart | 2021/04/17 16:00 | Stefanie Voegele v Anna Zaja | 6-1,6-3 |
| WTA Charleston | 2021/04/13 19:25 | Ons Jabeur v Stefanie Voegele | 6-4,6-1 |
| WTA Bogota | 2021/04/09 16:40 | Stefanie Voegele v Maria Camila Osorio | 3-6,5-7 |
| WTA Bogota | 2021/04/07 18:55 | Saisai Zheng v Stefanie Voegele | 4-6,1-6 |
| WTA Bogota | 2021/04/05 15:00 | Stefanie Voegele v Chloe Paquet | 3-6,6-1,6-4 |
| WTA St. Petersburg | 2021/03/16 18:10 | Stefanie Voegele v Tereza Martincova | 0-6,6-4,4-6 |
| WTA Lyon | 2021/03/04 17:50 | Stefanie Voegele v Paula Badosa | 2-6,4-6 |
| WTA Lyon | 2021/03/02 12:15 | Stefanie Voegele v Irina Maria Bara | 7-6,6-7,6-3 |
| WTA Stuttgart | 2021/04/17 15:55 | Katharina Gerlach v Laura Ioana Paar | 6-3,7-5 |
| WTA Charleston Qual | 2021/04/10 15:00 | Katharina Gerlach v Storm Hunter | 3-6,2-6 |
| WTA Bogota | 2021/04/04 15:00 | Katharina Gerlach v Daniela Seguel | 1-6,1-6 |
| WTA Bogota | 2021/04/03 15:00 | Clara Burel v Katharina Gerlach | 3-6,6-1,4-6 |
| ITF W25 Buenos Aires | 2021/03/26 12:00 | Katharina Gerlach v Carolina Alves | 4-6,1-6 |
| ITF W25 Buenos Aires | 2021/03/24 16:10 | Katharina Gerlach v Diana Marcinkevica | 6-0,6-1 |
| ITF W25 Altenkirchen | 2021/02/18 13:10 | Cristina Bucsa v Katharina Gerlach | 6-1,6-3 |
| ITF W25 Altenkirchen | 2021/02/17 09:30 | Dalma Galfi v Katharina Gerlach | 6-7,3-6 |