Stadium: Sala Polivalenta Cluj-Napoca Round: 1
| ITF - M15 Antalya | 2021/11/04 06:30 | Frunza, Nicolae v Lukas Neumayer | 3-6,3-6 |
| ITF - M15 Antalya | 2021/11/03 11:20 | Frunza, Nicolae v Konstantin Zhzhenov | 6-2,6-3 |
| ITF - M15 Antalya | 2021/10/22 07:00 | Nicholas David Ionel v Frunza, Nicolae | 6-4,6-1 |
| ITF - M15 Antalya | 2021/10/21 07:00 | Santiago De La Fuente v Frunza, Nicolae | 1-6,7-5,0-6 |
| ITF - M15 Antalya | 2021/10/20 10:20 | Gabriele Maria Noce v Frunza, Nicolae | 4-6,2-6 |
| ITF - M15 Antalya | 2021/10/13 09:20 | Apostol, Bogdan Ionut v Frunza, Nicolae | 7-6,7-6 |
| Challenger Sibiu | 2021/09/27 09:50 | Frunza, Nicolae v Nicholas David Ionel | 6-4,3-6,6-7 |
| Challenger Sibiu | 2021/09/26 11:10 | Oleksii Krutykh v Frunza, Nicolae | 2-6,6-7 |
| Challenger Campinas | 2021/11/19 19:00 | Sebastian Baez v Nicolas Alvarez | 6-4,6-3 |
| Challenger Campinas | 2021/11/16 13:00 | Nicolas Alvarez v Pedro Cachin | 4-6,6-4,6-2 |
| Challenger Campinas | 2021/11/15 15:25 | Joao Lucas Reis da Silva v Nicolas Alvarez | 6-2,3-6,3-6 |
| Challenger Campinas | 2021/11/14 14:00 | Luis Rodrigues Batista v Nicolas Alvarez | 1-6,0-6 |
| Montevideo, Uruguay | 2021/11/07 16:30 | Nicolas Alvarez v Lipovsek Puches, Tomas | 2-6,2-6 |
| Challenger Guayaquil | 2021/11/04 15:00 | Nicolas Alvarez v Facundo Bagnis | 2-6,6-4,1-6 |
| Challenger Guayaquil | 2021/11/02 21:45 | Nicolas Alvarez v Thiago Agustin Tirante | 4-6,7-5,6-3 |
| Challenger Guayaquil | 2021/11/01 16:00 | Nicolas Alvarez v Barrientos, Nicolas | 2-6,6-4,6-4 |