| UTR Pro Tennis Series Sofia Women | 2021/08/29 13:30 | Verginie Tchakarova v Silvia Maria Costache | 4-6,4-6 |
| UTR Pro Tennis Series Beograd Women | 2021/07/17 10:00 | Nikol Palecek v Silvia Maria Costache | 7-6,6-2 |
| UTR Pro Tennis Series Beograd Women | 2021/07/16 13:00 | Simona Ogescu v Silvia Maria Costache | 7-5,5-4 |
| UTR Pro Tennis Series Beograd Women | 2021/07/15 07:30 | Andrea Obradovic v Silvia Maria Costache | 0-3 |
| UTR Pro Tennis Series Beograd Women | 2021/07/13 11:30 | Martha Matoula v Silvia Maria Costache | 6-2,4-6,3-6 |
| UTR Pro Tennis Series Beograd Women | 2021/07/12 12:00 | Silvia Maria Costache v Draginja Vukovic | 6-2,7-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/16 08:00 | Denislava Glushkova v Silvia Maria Costache | 7-6,5-4 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/15 06:00 | Silvia Maria Costache v Ioana Gaspar | 2-3 |
| UTR Pro Tennis Series Sofia Women | 2021/08/29 14:15 | Sara Mikaca v Velizara Fileva | 4-6,6-2,6-3 |
| UTR Pro Tennis Series Zadar Women | 2021/08/15 08:00 | Sara Mikaca v Iulia Andreea Ionescu | 3-6,6-1,6-3 |
| UTR Pro Tennis Series Zadar Women | 2021/08/14 10:00 | Sara Mikaca v Matea Mamic | 6-1,6-0 |
| UTR Pro Tennis Series Zadar Women | 2021/08/12 12:00 | Sara Mikaca v Ema Bolebruchova | 7-6,4-6,2-5 |
| UTR Pro Tennis Series Zadar Women | 2021/08/10 11:00 | Sara Mikaca v Reka K Matko | 6-4,7-6 |
| UTR Pro Tennis Series Zadar Women | 2021/08/09 09:30 | Sara Mikaca v Nastja Kolar | 1-6,0-5 |
| ITF W15 Banja Luka | 2021/06/01 10:00 | Sara Mikaca v Timea Jaruskova | 1-6,3-6 |
| ITF W15 Sibenik | 2021/05/23 08:00 | Sara Mikaca v Adriana Rajkovic | 0-6,2-6 |