| UTR Pro Tennis Series Nis | 2021/10/06 07:00 | Petar Teodorovic v Andrey Chepelev | 4-6,3-6 |
| UTR Pro Tennis Series Nis | 2021/10/05 07:30 | Petar Teodorovic v Egor Novikov | 6-1,6-4 |
| UTR Pro Tennis Series Nis | 2021/10/04 07:00 | Aleksandar Ljubojevic v Petar Teodorovic | 4-6,3-6 |
| ITF M15 Pirot | 2021/09/21 14:55 | Savva Polukhin v Petar Teodorovic | 6-2,6-2 |
| ITF M15 Zlatibor | 2021/09/15 08:00 | Petar Teodorovic v Peter Nagy | 4-6,2-6 |
| UTR Pro Tennis Series Beograd | 2021/07/10 10:00 | Petar Teodorovic v Aleksa Mardjonovic | 2-6,6-4,3-6 |
| UTR Pro Tennis Series Beograd | 2021/07/08 07:30 | Petar Teodorovic v Luka Pavlovic | 3-6,6-4,4-5 |
| UTR Pro Tennis Series Beograd | 2021/07/07 09:00 | Petar Teodorovic v Yanais Laurent | 2-6,1-6 |
| UTR Pro Tennis Series Nis | 2021/10/07 07:00 | Egor Novikov v Denys Klok | 6-4,6-3 |
| UTR Pro Tennis Series Nis | 2021/10/05 07:30 | Aleksandar Ljubojevic v Denys Klok | 6-3,3-6,0-6 |
| UTR Pro Tennis Series Nis | 2021/10/04 07:00 | Denys Klok v Andrey Chepelev | 3-6,1-6 |