Stadium: Court 4 Round: 44 Ground: Clay
| 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 |
| ITF - W15 Manacor | 2020/01/22 14:00 | Mariia Kostiuk v Yoshitomi, Aiko | 1-6,3-6 |
| ITF - W15 Antalya | 2020/01/13 07:00 | Mariia Kostiuk v Glaude, Laure Line | 2-6,4-6 |
| ITF W15 LPD Gran Canaria | 2020/11/22 11:30 | Elena Rey v Rebeca Pereira | 0-6,3-6 |
| ITF W25 LPD Gran Canaria | 2020/11/15 10:15 | Rebeca Pereira v Malene Helgo | 4-6,2-6 |
| ITF Women Castellon | 2020/11/03 08:00 | Lucia Martinez v Rebeca Pereira | 6-0,7-5 |
| ITF Women Castellon | 2020/11/02 11:30 | Kaul, Maria Lota v Rebeca Pereira | 3-6,6-2,10-12 |
| ITF Women Castellon | 2020/11/01 13:00 | Portela, Caitlyn v Rebeca Pereira | 6-7,5-7 |
| ITF - W15 Monastir | 2020/10/28 10:15 | Rebeca Pereira v Darja Semenistaja | 4-6,2-6 |
| ITF - W15 Monastir | 2020/10/26 08:30 | Rebeca Pereira v Glantz, Lola Mireille | 6-0,6-1 |
| ITF - W15 Monastir | 2020/10/22 09:55 | Ponomar, Lisa v Rebeca Pereira | 6-2,7-5 |