Stadium: Court 6 Round: 26 Ground: Hardcourt outdoor
| ITF W15 Sozopol | 2021/09/14 09:00 | Nastja Kolar v Yoana Moneva | 6-0,6-0 |
| UTR Pro Tennis Series Sofia - nők | 2021/09/02 10:00 | Martha Matoula v Nastja Kolar | 6-4,1-1 |
| UTR Pro Tennis Series Sofia - nők | 2021/09/01 08:00 | Maja Radenkovic v Nastja Kolar | 6-2,0-6,0-6 |
| UTR Pro Tennis Series Sofia - nők | 2021/08/31 09:30 | Mirela Shkumbova v Nastja Kolar | 2-6,6-2,1-5 |
| ITF W25 Braunschweig | 2021/08/26 09:00 | Nastja Kolar v Katharina Hobgarski | 2-6,4-6 |
| ITF W25 Braunschweig | 2021/08/25 09:00 | Helene Pellicano v Nastja Kolar | 0-6,3-6 |
| UTR Pro Tennis Series Zadar - nők | 2021/08/11 09:30 | Nastja Kolar v Ema Bolebruchova | 6-1,1-1 |
| UTR Pro Tennis Series Zadar - nők | 2021/08/09 09:30 | Sara Mikaca v Nastja Kolar | 1-6,0-5 |
| ITF W15 Sozopol | 2021/09/14 09:00 | Gabriela Duca v Cemre Anil | 6-0,6-3 |
| ITF W15 Sharm El Sheikh | 2021/03/07 13:30 | Tamira Paszek v Gabriela Duca | 6-2,6-0 |
| ITF W15 Sharm El Sheikh | 2021/02/28 13:30 | Martha Matoula v Gabriela Duca | 6-2,6-2 |
| ITF W15 Sharm El Sheikh | 2021/02/21 11:30 | Valentina Gaggini v Gabriela Duca | 6-3,6-1 |
| ITF W15 Sharm El Sheikh | 2021/02/15 07:30 | Sofia Sewing v Gabriela Duca | 6-3,6-3 |
| ITF W15 Sharm El Sheikh | 2021/02/14 06:30 | Isabelle Haverlag v Gabriela Duca | 3-6,6-4,6-10 |
| ITF W15 Sharm El Sheikh | 2021/02/07 06:30 | Gabriela Duca v Jantje Tilbuerger | 2-6,2-6 |
| ITF W15 Heraklion | 2020/11/24 07:30 | Karola Patricia Bejenaru v Gabriela Duca | 6-0,6-1 |