Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| 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 |
| ITF W25 Braunschweig | 2021/08/26 09:00 | Kolar, Nastja v Katharina Hobgarski | 2-6,4-6 |
| ITF W25 Braunschweig | 2021/08/25 09:00 | Helene Pellicano v Kolar, Nastja | 0-6,3-6 |
| UTR Pro Tennis Series Zadar Women | 2021/08/11 09:30 | Kolar, Nastja v Bolebruchova, Ema | 6-1,1-1 |
| ITF W15 Sozopol | 2021/09/16 08:00 | Defne Cirpanli v Kira Pavlova | 6-4,7-5 |
| ITF W15 Sozopol | 2021/09/15 09:30 | Ekaterina Reyngold v Defne Cirpanli | 1-6,4-6 |
| ITF W15 Sozopol | 2021/09/14 07:00 | Defne Cirpanli v Shkumbova, Mirela | 6-1,6-1 |
| ITF W15 Sozopol | 2021/09/13 10:30 | Beatris Spasova v Defne Cirpanli | 3-6,2-6 |
| ITF Women Varna | 2021/09/05 08:30 | Mia Ristic v Defne Cirpanli | 6-3,7-5 |
| ITF W15 Chornomorsk | 2021/08/23 15:20 | Defne Cirpanli v Divine Dasam Nweke | 3-6,0-6 |
| ITF W15 Chornomorsk | 2021/08/23 07:15 | Krystyna Pochtovyk v Defne Cirpanli | 3-6,0-6 |
| ITF W15 Chornomorsk | 2021/08/22 07:15 | Daria Butsko v Defne Cirpanli | 6-4,6-7,7-10 |