Stadium: Court 3 Village Round: 25 Ground: Clay
| ITF W25 Parnu | 2021/08/08 10:25 | Kaia Kanepi v Anna Siskova | 7-5,6-4 |
| ITF W25 Parnu | 2021/08/07 08:55 | Oleksandra Oliynykova v Anna Siskova | 4-6,2-6 |
| ITF W25 Parnu | 2021/08/06 08:00 | Anna Siskova v Gatto-Monticone, Giulia | 6-3,0-6,6-3 |
| ITF W25 Parnu | 2021/08/05 08:30 | Anna Siskova v Kolar, Nastja | 6-1,6-3 |
| 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 | Hatouka, Yuliya 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 Olomouc | 2021/07/21 07:55 | Lena Papadakis v Ivakhnenko, Valentyna | 6-4,6-0 |
| WTA Lausanne | 2021/07/12 10:55 | Astra Sharma v Ivakhnenko, Valentyna | 5-7,6-2,6-1 |
| ITF W60 Montpellier | 2021/07/01 11:50 | Ivakhnenko, Valentyna v Sherif, M. | 6-1,2-6,3-6 |
| ITF W60 Montpellier | 2021/06/29 12:00 | Ivakhnenko, Valentyna v Carole Monnet | 6-2,6-4 |
| ITF W60 Montpellier | 2021/06/28 12:50 | Ivakhnenko, Valentyna v Marine Partaud | 5-7,7-6,10-6 |
| ITF W60 Montpellier | 2021/06/27 09:40 | Ivakhnenko, Valentyna v Margaux Rouvroy | 6-3,7-5 |
| UTR Pro Tennis Series Barcelona Women | 2021/06/13 10:30 | Ivakhnenko, Valentyna v Ania Hertel | 6-1,5-2 |
| UTR Pro Tennis Series Barcelona Women | 2021/06/12 08:30 | Darja Semenistaja v Ivakhnenko, Valentyna | 6-3,5-7,4-5 |