Stadium: Court 6 Round: 26 Ground: Clay
| ITF W25 Braunschweig | 2021/08/25 12:30 | Sofya Lansere v Lexie Stevens | 6-3,6-3 |
| ITF W25 Vrnjacka Banja | 2021/08/19 10:55 | Sofya Lansere v Polina Leykina | 6-7,4-6 |
| ITF W25 Vrnjacka Banja | 2021/08/18 07:30 | Sofya Lansere v Polina Bakhmutkina | 3-6,7-5,6-1 |
| ITF W60 Nur-Sultan | 2021/07/14 11:55 | Sofya Lansere v Iryna Shymanovich | 2-6,4-6 |
| ITF W25 Nur-Sultan | 2021/07/07 05:30 | Anna Siskova v Sofya Lansere | 7-5,6-3 |
| ITF W25 Porto | 2021/06/24 14:10 | Sofya Lansere v Maria G Carrasco | 3-6,5-7 |
| ITF W25 Porto | 2021/06/22 14:30 | Sofya Lansere v Maria Ines Fonte | 6-1,6-0 |
| ITF W25 Figueira Da Foz | 2021/06/15 10:25 | Sofya Lansere v Eri Hozumi | 3-6,1-6 |
| ITF W25 Braunschweig | 2021/08/25 13:00 | Anna Klasen v Tamira Paszek | 6-2,6-3 |
| ITF W25 Koksijde | 2021/08/10 10:05 | Anna Klasen v Katharina Hobgarski | 6-7,4-6 |
| ITF W25 Koksijde | 2021/08/09 12:50 | Ekaterina Kazionova v Anna Klasen | 4-6,6-3,5-10 |
| ITF W25 Koksijde | 2021/08/08 08:00 | Anna Klasen v Lexie Stevens | 6-3,6-3 |
| ITF W60 Versmold | 2021/07/29 12:15 | Federica Di Sarra v Anna Klasen | 6-4,6-4 |
| ITF W60 Versmold | 2021/07/27 13:00 | Anna Klasen v Daniela Seguel | 6-3,6-7,6-4 |
| ITF W60 Versmold | 2021/07/26 15:00 | Anna Klasen v Yana Morderger | 6-7,6-2,10-6 |
| ITF W60 Olomouc | 2021/07/18 08:00 | Amanda Carreras v Anna Klasen | 6-2,6-1 |