| 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 | 2021/05/11 10:00 | Mirela Shkumbova v Elitsa Kostova | 0-6,1-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/10 11:30 | Elitsa Kostova v Elena Trencheva | 6-0,5-1 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/09 08:30 | Elitsa Kostova v Simona Ogescu | 7-6,6-2 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/08 09:00 | Elitsa Kostova v Daria Shalamanova | 6-4,3-6,6-1 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/07 10:00 | Doroteja Petrovic v Elitsa Kostova | 1-6,0-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/06 10:00 | Mirela Shkumbova v Elitsa Kostova | 1-6,0-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/04 11:30 | Ralitsa Alexandrova v Elitsa Kostova | 2-6,0-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/03 08:30 | Elitsa Kostova v Ani Vangelova | 6-1,5-0 |