| UTR Pro Tennis Series - Pazardzhik - Feminin | 2021/05/15 06:00 | Nastja Kolar v Darja Semenistaja | 4-6,4-6 |
| UTR Pro Tennis Series Barcelona - Feminin | 2021/12/10 11:00 | Darja Semenistaja v Lucinda Gatsiounis | 6-2,5-1 |
| UTR Pro Tennis Series Barcelona - Feminin | 2021/12/09 12:30 | Darja Semenistaja v Anna Morgina | 6-4,6-4 |
| UTR Pro Tennis Series Barcelona - Feminin | 2021/12/08 10:30 | Sebastianna Scilipoti v Darja Semenistaja | 6-2,6-3 |
| UTR Pro Tennis Series Barcelona - Feminin | 2021/12/07 14:30 | Elizabeth Jurna v Darja Semenistaja | 3-6,1-6 |
| ITF - W15 Cancun | 2021/10/17 15:00 | Darja Semenistaja v Rachel Gailis | 7-5,7-5 |
| ITF - W15 Cancun | 2021/10/16 15:00 | Darja Semenistaja v Madison Sieg | 6-2,6-4 |
| ITF - W15 Cancun | 2021/10/15 15:00 | Darja Semenistaja v Hina Inoue | 7-5,6-2 |
| ITF - W15 Cancun | 2021/10/14 18:10 | Darja Semenistaja v Eleonore Tchakarova | 6-2,6-2 |
| UTR Pro Tennis Series Barcelona - Feminin | 2021/12/10 11:00 | Nastja Kolar v Silvia Martinez Jimenez | 6-2,6-2 |
| UTR Pro Tennis Series Barcelona - Feminin | 2021/12/09 11:00 | Nastja Kolar v Kristyna Hrabalova | 6-1,6-4 |
| UTR Pro Tennis Series Barcelona - Feminin | 2021/12/08 10:30 | Ivonne Cavalle-Reimers v Nastja Kolar | 4-6,6-4,6-2 |
| UTR Pro Tennis Series - Zadar - Feminin | 2021/11/29 12:30 | Nastja Kolar v Victoria Borodulina | 6-2,6-2 |
| UTR Pro Tennis Series - Zadar - Feminin | 2021/11/29 09:51 | Nastja Kolar v Andjela Lopicic | 6-0,6-3 |
| UTR Pro Tennis Series - Zadar - Feminin | 2021/11/27 08:00 | Nastja Kolar v Chiara Jerolimov | 6-1,3-2 |
| UTR Pro Tennis Series - Zadar - Feminin | 2021/11/26 08:00 | Nastja Kolar v Laura Svatikova | 5-7,6-1,4-6 |
| UTR Pro Tennis Series - Zadar - Feminin | 2021/11/24 13:30 | Sara Gvozdenovic v Nastja Kolar | 6-4,2-6,1-6 |