Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF W25 Manacor | 2021/02/28 12:00 | Olga Parres Azcoitia v Adithya Karunaratne | 1-6,2-6 |
| ITF W15 Lousada | 2020/11/05 13:30 | Lucia Bronzetti v Olga Parres Azcoitia | 6-3,6-1 |
| ITF W15 Lousada | 2020/11/04 15:30 | Elizabet Hamaliy v Olga Parres Azcoitia | 6-7,4-6 |
| ITF W15 Lousada | 2020/11/02 10:00 | Olga Parres Azcoitia v Younes, Kristin | 6-3,6-1 |
| ITF W15 Lousada | 2020/10/28 17:30 | Olga Parres Azcoitia v Angelica Moratelli | 2-6,0-6 |
| ITF W15 Lousada | 2020/10/26 14:30 | Olga Parres Azcoitia v Diana Martynov | 4-6,7-6,10-8 |
| ITF W25 Porto | 2020/09/27 16:00 | Olga Parres Azcoitia v Carrillo Marin, Alba | 2-6,0-6 |
| ITF W25 Porto | 2020/09/21 10:30 | Arbuthnott, Emily v Olga Parres Azcoitia | 6-2,6-3 |
| ITF W25 Selva Gardena | 2020/12/13 13:20 | Mariia Kostiuk v Hofer, Verena | 3-6,3-6 |
| ITF W15 LPD Gran Canaria | 2020/11/23 10:15 | Mariia Kostiuk v Rebeca Pereira | 1-6,0-6 |
| ITF W15 LPD Gran Canaria | 2020/11/22 09:30 | Mariia Kostiuk v Morales, Maria Fernanda | 6-3,6-1 |
| ITF Women Castellon | 2020/11/01 10:30 | Mariia Kostiuk v Berlanga Bandera, Maria | 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 Droguet, Aubane | 2-6,1-6 |
| ITF W15 Palmanova | 2020/02/03 10:00 | Mariia Kostiuk v Cortijo Parreno, Blanca | 7-6,2-6,3-10 |
| ITF W15 Palmanova | 2020/02/02 09:30 | Abed, Yara v Mariia Kostiuk | 3-6,1-6 |