Stadium: Tammsaare 2 Round: 26 Ground: Clay
| ITF W25 Parnu | 2021/08/04 16:55 | Anna Siskova v Verena Meliss | 6-2,6-4 |
| ITF W60 Olomouc | 2021/07/21 10:35 | Nikola Breckova v Anna Siskova | 6-3,3-6,6-3 |
| ITF W60 Nur-Sultan | 2021/07/15 06:00 | Yuliya Hatouka v Anna Siskova | 6-2,6-1 |
| ITF W60 Nur-Sultan | 2021/07/14 13:45 | Maria Timofeeva v Anna Siskova | 4-6,5-7 |
| ITF W60 Nur-Sultan | 2021/07/13 06:00 | Anna Siskova v Anastasia Sukhotina | 6-2,6-4 |
| ITF W25 Nur-Sultan | 2021/07/08 05:00 | Sabina Sharipova v Anna Siskova | 7-5,6-2 |
| ITF W25 Nur-Sultan | 2021/07/07 05:30 | Anna Siskova v Sofya Lansere | 7-5,6-3 |
| ITF W25 Wroclaw | 2021/06/29 10:10 | Nuria Brancaccio v Anna Siskova | 5-7,7-6,6-3 |
| ITF W25 Parnu | 2021/08/04 07:00 | Nastja Kolar v Magali Kempen | 6-4,6-3 |
| ITF W60 Grodzisk Mazowiecki | 2021/07/26 09:30 | Nastja Kolar v Akgul Amanmuradova | 6-1,4-6,3-10 |
| ITF W60 Grodzisk Mazowiecki | 2021/07/25 10:10 | Weronika Jasmina Forys v Nastja Kolar | 2-6,1-6 |
| UTR Pro Tennis Series Ricany - nők | 2021/07/04 09:00 | Nastja Kolar v Oleksandra Oliynykova | 6-4,3-6,3-6 |
| UTR Pro Tennis Series Ricany - nők | 2021/07/03 12:00 | Aneta Laboutkova v Nastja Kolar | 2-6,2-6 |
| UTR Pro Tennis Series Ricany - nők | 2021/07/01 09:30 | Tereza Kolarova v Nastja Kolar | 4-6,1-6 |
| UTR Pro Tennis Series Ricany - nők | 2021/06/30 11:00 | Katerina Filip v Nastja Kolar | 3-6,3-6 |
| UTR Pro Tennis Series Ricany - nők | 2021/06/28 14:30 | Marketa Petruzelova v Nastja Kolar | 5-7,5-6 |