| UTR Pro Tennis Series Pazardzhik Women | 2021/05/10 08:30 | Nastja Kolar v Doroteja Petrovic | 6-0,5-1 |
| ITF W15 Cairo | 2021/04/28 08:00 | Nicole Fossa Huergo v Nastja Kolar | 6-1,6-1 |
| ITF W15 Cairo | 2021/04/23 09:00 | Maria Timofeeva v Nastja Kolar | 6-2,7-5 |
| ITF W15 Cairo | 2021/04/22 10:50 | Lian Tran v Nastja Kolar | 6-7,2-6 |
| ITF W15 Cairo | 2021/04/21 08:00 | Briana Szabo v Nastja Kolar | 3-6,2-6 |
| ITF W15 Cairo | 2021/04/16 08:30 | Anastasia Zolotareva v Nastja Kolar | 6-0,6-3 |
| ITF W15 Cairo | 2021/04/15 10:55 | Ani Amiraghyan v Nastja Kolar | 6-7,2-6 |
| ITF W15 Cairo | 2021/04/14 18:00 | Ekaterina Vishnevskaya v Nastja Kolar | 3-6,4-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/10 07:00 | Gebriela Mihaylova v Rositsa Dencheva | 6-2,5-0 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/08 09:00 | Gebriela Mihaylova v Ani Vangelova | 2-6,5-7 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/07 07:00 | Gebriela Mihaylova v Katerina Dimitrova | 6-4,5-7,5-7 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/05 13:30 | Gebriela Mihaylova v Yoanna Radulova | 6-3,6-2 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/04 10:00 | Gebriela Mihaylova v Julia Terziyska | 2-6,1-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/03 07:00 | Elena Trencheva v Gebriela Mihaylova | 0-6,3-5 |
| ITF W15 Pazardzhik | 2020/10/27 09:30 | Gebriela Mihaylova v Nikola Breckova | 6-4,4-6,1-6 |
| ITF W15 Varna | 2020/09/09 13:20 | Chantal Sauvant v Gebriela Mihaylova | 6-0,6-0 |