| ITF W15 Sozopol | 2021/09/19 07:00 | Kolar, Nastja v Catini, Chiara | 6-4,6-7,3-6 |
| ITF W15 Sozopol | 2021/09/18 07:00 | Kolar, Nastja v Dia Evtimova | 7-6,7-5 |
| ITF W15 Sozopol | 2021/09/17 08:35 | Kolar, Nastja v Defne Cirpanli | 6-1,6-3 |
| ITF W15 Sozopol | 2021/09/16 12:20 | Kolar, Nastja v Duca, Gabriela | 6-4,4-6,6-3 |
| ITF W15 Sozopol | 2021/09/14 09:00 | Kolar, Nastja v Yoana Moneva | 6-0,6-0 |
| UTR Pro Tennis Series Sofia Women | 2021/09/02 10:00 | Martha Matoula v Kolar, Nastja | 6-4,1-1 |
| UTR Pro Tennis Series Sofia Women | 2021/09/01 08:00 | Maja Radenkovic v Kolar, Nastja | 6-2,0-6,0-6 |
| UTR Pro Tennis Series Sofia Women | 2021/08/31 09:30 | Shkumbova, Mirela v Kolar, Nastja | 2-6,6-2,1-5 |
| UTR Pro Tennis Series Zadar Women | 2021/08/14 10:00 | Sara Mikaca v Mamic, Matea | 6-1,6-0 |
| UTR Pro Tennis Series Zadar Women | 2021/08/13 08:00 | Mamic, Matea v Zlochova, Zuzana | 0-6,0-5 |
| UTR Pro Tennis Series Zadar Women | 2021/08/11 08:00 | Mamic, Matea v Safarova, Zdena | 2-6,2-6 |
| UTR Pro Tennis Series Zadar Women | 2021/08/10 08:00 | Mamic, Matea v Zakarlyuk, Marianna | 4-6,6-1,3-5 |
| UTR Pro Tennis Series Zadar Women | 2021/08/09 12:30 | Zuzul, Katarina v Mamic, Matea | 2-6,7-5,4-5 |
| UTR Pro Tennis Series Zadar Women | 2021/08/07 11:00 | Arina Gabriela Vasilescu v Mamic, Matea | 6-4,6-0 |
| UTR Pro Tennis Series Zadar Women | 2021/08/05 12:30 | Mamic, Matea v Vaneva, Zinovia | 1-6,5-6 |
| UTR Pro Tennis Series Zadar Women | 2021/08/02 11:00 | Mamic, Matea v Lana Caculovic | 6-2,5-1 |