Stadium: Court 7 Round: 25 Ground: Hardcourt outdoor
| ITF W15 Sozopol | 2021/10/07 10:40 | Kolar, Nastja v Anna Brogan | 2-6,2-6 |
| ITF W15 Sozopol | 2021/10/05 09:00 | Kolar, Nastja v Yoana Moneva | 6-0,6-1 |
| 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 Dijon | 2021/09/14 09:40 | Audrey Albie v Laia Petretic | 6-3,6-4 |
| ITF W25 Saint Palais Sur Mer | 2021/09/09 13:25 | Laia Petretic v Despina Papamichail | 4-6,2-6 |
| ITF W25 Saint Palais Sur Mer | 2021/09/07 14:00 | Joanna Garland v Laia Petretic | 4-6,4-6 |
| ITF W15 Aix-en-Provence | 2021/08/31 15:25 | Haseth, Lilly Elida v Laia Petretic | 6-4,3-6,7-5 |
| ITF W15 Warmbad-Villach | 2021/08/16 12:30 | Laia Petretic v Enola Chiesa | 4-6,7-6,10-12 |
| ITF - W15 Antalya | 2021/01/29 06:30 | Laia Petretic v Kato, Miyu | 3-6,3-6 |
| ITF - W15 Antalya | 2021/01/28 06:00 | Laia Petretic v Nikitina, Iuliia | 6-3,6-2 |
| ITF W15 Saint Palais Sur Mer | 2020/09/08 09:00 | Laia Petretic v Ines Nicault | 6-3,3-6,5-7 |