Stadium: Court 3 Round: 45 Ground: Clay
| ITF W15 Antalya | 2021/03/17 10:55 | Anastasia Detiuc v Matilde Paoletti | 3-6,6-3,6-3 |
| ITF W15 Antalya | 2021/03/10 11:20 | Gergana Topalova v Matilde Paoletti | 3-6,6-1,6-2 |
| ITF W15 Antalya | 2021/02/12 10:30 | Marta Custic v Matilde Paoletti | 7-5,5-7,6-2 |
| ITF W15 Antalya | 2021/02/11 09:15 | Matilde Paoletti v Vlada Koval | 6-4,7-5 |
| ITF W15 Antalya | 2021/02/09 13:50 | Matilde Paoletti v Antonia Samudio | 6-3,6-0 |
| ITF W15 Antalya | 2021/02/04 06:30 | Sapfo Sakellaridi v Matilde Paoletti | 6-4,6-2 |
| ITF W15 Antalya | 2021/02/03 11:35 | Matilde Paoletti v Nuria Brancaccio | 6-1,7-6 |
| ITF W15 Antalya | 2021/02/01 13:25 | Carolina Alves v Matilde Paoletti | 6-1,6-4 |
| 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 |
| UTR Pro Tennis Series Barcelona Women | 2021/06/09 12:00 | Mariia Kostiuk v Valentyna Ivakhnenko | 1-6,1-5 |
| ITF W25 Madrid | 2021/06/06 09:00 | Mariia Kostiuk v Maria Garcia Cid | 1-6,1-6 |
| ITF W25 Calvi | 2021/04/11 12:10 | Rebecca Amerio v Mariia Kostiuk | 6-4,6-1 |