Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| ITF W25 Loule | 2021/10/06 13:55 | Harmony Tan v Darya Astakhova | 7-5,6-7,6-4 |
| ITF W25 Budapest | 2021/09/29 07:30 | Darya Astakhova v Lina Gjorcheska | 4-6,2-6 |
| ITF W25 Jablonec nad Nisou | 2021/09/14 11:10 | Maria Mateas v Darya Astakhova | 6-3,6-3 |
| ITF W25 Radom | 2021/08/11 12:20 | Erika Sema v Darya Astakhova | 2-6,5-7 |
| ITF W25 Bydgoszcz | 2021/08/08 09:25 | Darya Astakhova v Nastasja Schunk | 6-4,2-6,0-6 |
| ITF W25 Bydgoszcz | 2021/08/07 11:00 | Katharina Gerlach v Darya Astakhova | 6-3,2-6,1-6 |
| ITF W25 Bydgoszcz | 2021/08/06 09:40 | Carole Monnet v Darya Astakhova | 3-6,2-6 |
| ITF W25 Bydgoszcz | 2021/08/05 12:55 | Darya Astakhova v Zeynep Sonmez | 6-2,7-6 |
| ITF W80 Les Franqueses | 2021/10/24 07:00 | Natalia Fehr v Anna Klasen | 0-6,3-6 |
| ITF W25 Hamburg | 2021/10/18 15:55 | Anna Klasen v Zeel Desai | 1-6,4-6 |
| ITF W25 Hamburg | 2021/10/18 11:30 | Anna Klasen v Anita Bertoloni | 6-2,6-3 |
| ITF W80 Wiesbaden | 2021/09/23 08:30 | Anna Klasen v Federica Di Sarra | 4-6,5-7 |
| ITF W80 Wiesbaden | 2021/09/22 08:30 | Yana Morderger v Anna Klasen | 7-6,1-6,3-6 |
| ITF W15 Dijon | 2021/09/15 08:00 | Alina Granwehr v Anna Klasen | 6-2,6-4 |
| ITF W15 Dijon | 2021/09/14 11:00 | Karen Marthiens v Anna Klasen | 1-6,1-6 |
| ITF W25 Braunschweig | 2021/08/29 09:00 | Anna Klasen v Nastasja Schunk | 3-6,1-6 |