| UTR Pro Tennis Series Bucharest Women | 2021/11/09 08:30 | Nastja Kolar v Daniella Dimitrova | 6-1,6-2 |
| UTR Pro Tennis Series Bucharest Women | 2021/11/08 10:00 | Sara Gvozdenovic v Nastja Kolar | 6-3,1-6,2-6 |
| UTR Pro Tennis Series Burgas Women | 2021/10/31 07:30 | Julia Terziyska v Nastja Kolar | 6-1,5-4 |
| UTR Pro Tennis Series Burgas Women | 2021/10/29 09:30 | Nevena Sokovic v Nastja Kolar | 3-6,0-6 |
| UTR Pro Tennis Series Burgas Women | 2021/10/28 06:30 | Yoanna Radulova v Nastja Kolar | 1-6,3-5 |
| UTR Pro Tennis Series Burgas Women | 2021/10/26 13:00 | Zinovia Vaneva v Nastja Kolar | 6-2,5-7,4-6 |
| UTR Pro Tennis Series Burgas Women | 2021/10/25 09:30 | Nastja Kolar v Crissy Alexia Tudora | 6-0,6-3 |
| ITF W15 Sozopol | 2021/10/17 07:30 | Nastja Kolar v Martha Matoula | 7-5,3-6,6-1 |
| UTR Pro Tennis Series Bucharest Women | 2021/09/07 07:00 | Diana Ilie v Amariei I Dalina | 5-7,3-5 |