| UTR Pro Tennis Series Pazardzhik Women | 2021/05/12 08:30 | Kolar, Nastja v Silvia Maria Costache | 6-2,6-0 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/11 11:30 | Kolar, Nastja v Gebriela Mihaylova | 6-3,5-2 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/10 08:30 | Kolar, Nastja v Doroteja Petrovic | 6-0,5-1 |
| ITF W15 Cairo | 2021/04/28 08:00 | Nicole Fossa Huergo v Kolar, Nastja | 6-1,6-1 |
| ITF W15 Cairo | 2021/04/23 09:00 | Maria Timofeeva v Kolar, Nastja | 6-2,7-5 |
| ITF W15 Cairo | 2021/04/22 10:50 | Lian Tran v Kolar, Nastja | 6-7,2-6 |
| ITF W15 Cairo | 2021/04/21 08:00 | Briana Szabo v Kolar, Nastja | 3-6,2-6 |
| ITF W15 Cairo | 2021/04/16 08:30 | Anastasia Zolotareva v Kolar, Nastja | 6-0,6-3 |
| 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 07:30 | Rositsa Dencheva v Luisa Meyer Auf Der Heide | 0-6,3-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/07 11:30 | Darja Semenistaja v Rositsa Dencheva | 3-6,6-2,7-5 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/06 07:00 | Ruseva, Nikol v Rositsa Dencheva | 0-6,5-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/05 09:00 | Simona Ogescu v Rositsa Dencheva | 6-4,4-6,6-2 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/03 12:00 | Stefana Lazar v Rositsa Dencheva | 4-6,0-6 |