Stadium: Court 13 Round: 44 Ground: Clay
| 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 Antalya | 2019/12/15 09:00 | Katsiaryna Skachkova v Mariia Kostiuk | 6-3,6-4 |
| ITF W15 Platja D'Aro | 2020/10/25 10:00 | Maria B Bandera v Margaux Komano | 4-6,6-2,9-11 |
| ITF W15 Melilla | 2020/09/16 10:05 | Leyre Romero Gormaz v Maria B Bandera | 4-6,6-2,6-4 |
| ITF Women Marbella | 2018/09/04 09:40 | Maria B Bandera v Julita Saner | 2-6,1-6 |
| ITF Women Marbella | 2018/09/02 08:00 | Eva B Munoz v Maria B Bandera | 2-6,4-6 |