| UTR Pro Tennis Series - Bucuresti | 2021/12/01 14:00 | Stefan A Andreescu v Olexiy Kolisnyk | 6-2,2-6,6-4 |
| UTR Pro Tennis Series - Bucuresti | 2021/11/30 08:00 | Stefan A Andreescu v Ioan Alexandru Chirita | 6-3,6-4 |
| UTR Pro Tennis Series - Bucuresti | 2021/11/29 11:00 | Stefan A Andreescu v Vasile Antonescu | 7-6,6-0 |
| UTR Pro Tennis Series - Brasov | 2021/10/31 09:30 | Vasile Antonescu v Stefan A Andreescu | 4-6,7-6,6-3 |
| UTR Pro Tennis Series - Brasov | 2021/10/30 09:30 | Stefan A Andreescu v Alexander Lazov | 6-3,7-5 |
| UTR Pro Tennis Series - Brasov | 2021/10/29 08:30 | Stefan A Andreescu v Dan Alexandru Tomescu | 6-3,5-7,1-6 |
| UTR Pro Tennis Series - Brasov | 2021/10/28 08:30 | Stefan A Andreescu v Dragos Constantin Ignat | 6-3,6-6 |
| UTR Pro Tennis Series - Brasov | 2021/10/27 10:00 | Valentin Vanta v Stefan A Andreescu | 3-6,7-6,5-2 |
| UTR Pro Tennis Series - Bucuresti | 2021/12/01 11:00 | Vasile Antonescu v Nicolae Frunza | 6-3,1-6,3-6 |
| UTR Pro Tennis Series - Bucuresti | 2021/11/29 09:30 | Ioan Alexandru Chirita v Nicolae Frunza | 2-6,2-5 |
| Cupa Davis | 2021/11/27 10:00 | Nicolae Frunza v Nicolas Alvarez | 6-2,6-4 |
| ITF - M15 Antalya | 2021/11/04 06:30 | Nicolae Frunza v Lukas Neumayer | 3-6,3-6 |
| ITF - M15 Antalya | 2021/11/03 11:20 | Nicolae Frunza v Konstantin Zhzhenov | 6-2,6-3 |
| ITF - M15 Antalya | 2021/10/22 07:00 | Nicholas David Ionel v Nicolae Frunza | 6-4,6-1 |
| ITF - M15 Antalya | 2021/10/21 07:00 | Santiago De La Fuente v Nicolae Frunza | 1-6,7-5,0-6 |
| ITF - M15 Antalya | 2021/10/20 10:20 | Gabriele Maria Noce v Nicolae Frunza | 4-6,2-6 |