Stadium: Court 7 Round: 25 Ground: Hardcourt outdoor
| ITF W15 Sozopol | 2021/09/14 09:00 | Kolar, Nastja v Yoana Moneva | 6-0,6-0 |
| UTR Pro Tennis Series Zadar Women | 2021/10/02 07:00 | Zlochova, Zuzana v Kolar, Nastja | 3-6,6-4,6-4 |
| UTR Pro Tennis Series Zadar Women | 2021/10/01 12:30 | Bolebruchova, Ema v Kolar, Nastja | 2-6,1-6 |
| UTR Pro Tennis Series Zadar Women | 2021/09/30 08:00 | Victoria Chramcova v Kolar, Nastja | 0-6,0-6 |
| UTR Pro Tennis Series Zadar Women | 2021/09/28 08:30 | Bojana Marinkovic v Kolar, Nastja | 2-6,6-4,6-4 |
| UTR Pro Tennis Series Zadar Women | 2021/09/27 15:30 | Kolar, Nastja v Mamic, Matea | 2-6,6-1,5-2 |
| 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 | 2021/09/14 09:00 | Kolar, Nastja v Yoana Moneva | 6-0,6-0 |