Stadium: CENTRE COURT Round: 25 Ground: Clay
| ITF W15 Sibenik | 2021/05/24 10:25 | Nikola Breckova v Sophie Luescher | 7-6,2-6,10-12 |
| ITF W15 Sibenik | 2021/05/17 09:05 | Chantal Sauvant v Nikola Breckova | 7-5,6-3 |
| ITF W15 Sibenik | 2021/05/16 07:30 | Matea Mamic v Nikola Breckova | 1-6,3-6 |
| ITF W15 Antalya | 2021/05/03 07:00 | Nikola Breckova v Flaminia Scara | 7-5,5-7,7-10 |
| ITF W15 Antalya | 2021/05/02 06:00 | Nikola Breckova v Kajsa Rinaldo Persson | 6-4,6-0 |
| ITF W15 Antalya | 2021/04/25 07:00 | Nikola Breckova v Barbara Dessolis | 4-6,2-6 |
| ITF W15 New Delhi | 2021/03/02 06:25 | Zeel Desai v Nikola Breckova | 6-4,6-2 |
| ITF W15 Shymkent | 2021/02/12 05:25 | Nikola Breckova v Yuliya Hatouka | 6-3,2-6,1-6 |
| 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 Perigueux | 2021/06/25 09:00 | Anna Siskova v Lucia Bronzetti | 2-6,4-6 |
| ITF W25 Perigueux | 2021/06/24 08:00 | Polina Leykina v Anna Siskova | 2-6,3-6 |