Stadium: Court 2 Round: 44 Ground: Clay
| ITF Women Castellon | 2020/11/01 10:30 | Mariia Kostiuk v Maria B Bandera | 3-6,1-6 |
| ITF W15 - Platja d'Aro | 2020/10/25 11:00 | Ali Collins v Mariia Kostiuk | 7-5,6-3 |
| ITF W60 - Saint-Malo | 2020/09/07 10:30 | Mariia Kostiuk v Aubane Droguet | 2-6,1-6 |
| ITF W15 - Palmanova | 2020/02/03 10:00 | Mariia Kostiuk v Blanca Cortijo Parreno | 7-6,2-6,3-10 |
| ITF W15 - Palmanova | 2020/02/02 09:30 | Yara Abed v Mariia Kostiuk | 3-6,1-6 |
| ITF - W15 Manacor | 2020/01/22 14:00 | Mariia Kostiuk v Aiko Yoshitomi | 1-6,3-6 |
| ITF - W15 Antalya | 2020/01/13 07:00 | Mariia Kostiuk v Laure Line Glaude | 2-6,4-6 |
| ITF - W15 Antalya | 2020/01/07 07:00 | Tuana Tinaztepe v Mariia Kostiuk | 2-6,6-2,12-10 |
| ITF - W15 Sharm-el-Sheikh | 2020/11/01 09:00 | Maria Fernanda Morales v Demi Tran | 0-6,2-6 |
| ITF - W15 Sharm-el-Sheikh | 2020/10/25 15:30 | Maria Fernanda Morales v Sathwika Sama | 2-6,1-6 |
| ITF W15 Tampere | 2019/07/24 08:45 | Maria Fernanda Morales v Sofiia Likhacheva | 1-6,2-6 |
| ITF W15 Tampere | 2019/07/23 08:25 | Maria Fernanda Morales v Sofiya Chekhlystova | 1-6,1-6 |
| ITF W15 Parnu | 2019/07/15 10:00 | Elizaveta Kuznetsova v Maria Fernanda Morales | 6-0,6-0 |
| ITF W15 Montemor-O-Novo | 2019/05/27 15:00 | Maria Fernanda Morales v Beatriz Neves | 1-6,5-7 |
| ITF W15 Tucepi | 2019/05/07 07:00 | Victoria Borodulina v Maria Fernanda Morales | 6-1,6-2 |
| ITF - W15 Şımkent | 2019/04/15 03:30 | Polina Bakhmutkina v Maria Fernanda Morales | 6-0,6-0 |