Stadium: Court 4 Round: 54 Ground: Clay
| ITF W25 Warmbad-Villach | 2022/05/15 10:00 | Mariia Kostiuk v Lisa Gruber | 6-7,1-6 |
| ITF W60 Collonge-Bellerive | 2021/08/30 09:40 | Mariia Kostiuk v Tina Nadine Smith | 1-6,2-6 |
| ITF W25 Verbier | 2021/08/22 09:10 | Matilde Paoletti v Mariia Kostiuk | 6-4,6-0 |
| ITF W25 Les Contamines | 2021/07/18 12:55 | Pauline Wuarin v Mariia Kostiuk | 6-2,6-2 |
| ITF W100 Contrexeville | 2021/07/04 09:05 | Mariia Kostiuk v Tina Nadine Smith | 0-6,0-6 |
| ITF W60 Montpellier | 2021/06/27 15:10 | Mariia Kostiuk v Camilla Rosatello | 0-6,0-6 |
| UTR Pro Tennis Series Barcelona Women | 2021/06/13 09:30 | Mariia Kostiuk v Eleanor Baglow | 1-6,2-6 |
| UTR Pro Tennis Series Barcelona Women | 2021/06/10 08:00 | Mariia Kostiuk v Romy Kolzer | 0-6,1-6 |
| ITF W60 Rome | 2022/05/18 11:35 | Daniela Seguel v Sapfo Sakellaridi | 6-4,6-4 |
| ITF W60 Rome | 2022/05/17 08:00 | Sapfo Sakellaridi v Martyna Kubka | 6-0,6-1 |
| ITF W60 Rome | 2022/05/16 09:55 | Sapfo Sakellaridi v Jenny Duerst | 7-6,6-2 |
| ITF W25 Santa Margherita | 2022/05/12 09:30 | Sapfo Sakellaridi v Yuliana Lizarazo | 6-7,6-2,4-6 |
| ITF W25 Santa Margherita | 2022/05/11 13:25 | Taylor Ng v Sapfo Sakellaridi | 1-6,5-7 |
| ITF W25 Santa Margherita | 2022/05/05 12:00 | Sara Bejlek v Sapfo Sakellaridi | 6-4,3-6,7-6 |
| ITF W25 Santa Margherita | 2022/04/27 13:35 | Leyre Romero Gormaz v Sapfo Sakellaridi | 6-1,6-1 |
| ITF W25 Santa Margherita | 2022/04/20 13:25 | Anna Danilina v Sapfo Sakellaridi | 7-6,6-4 |