| 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 Beograd | 2021/07/06 10:30 | Petar Teodorovic v Bogdan Borza | 6-3,3-6,6-3 |
| UTR Pro Tennis Series Beograd | 2021/07/05 12:00 | Petar Teodorovic v Luka Todorovic | 7-6,6-2 |
| Adriatic Tennis Series | 2020/06/09 09:20 | Petar Teodorovic v Miljan Zekic | 3-6,1-6 |
| UTR Pro Tennis Series Beograd | 2021/07/09 10:00 | Aleksa Mardjonovic v Viktor Jovic | 1-6,1-6 |
| UTR Pro Tennis Series Beograd | 2021/07/08 10:30 | Aleksa Mardjonovic v Yaraslav Shyla | 4-6,0-6 |
| UTR Pro Tennis Series Beograd | 2021/07/07 12:00 | Jean Thirouin v Aleksa Mardjonovic | 6-4,6-2 |
| UTR Pro Tennis Series Beograd | 2021/07/06 07:30 | Stefan Latinov v Aleksa Mardjonovic | 3-6,1-6 |
| ITF M25 Belgrád | 2021/06/28 07:00 | Quentin Folliot v Aleksa Mardjonovic | 6-3,7-5 |
| ITF M25 Belgrád | 2021/06/27 09:00 | Valentin Vanta v Aleksa Mardjonovic | 5-7,3-6 |
| ITF M15 Szkopje | 2021/05/31 11:00 | Luigi Sorrentino v Aleksa Mardjonovic | 6-0,6-4 |
| ITF M15 Brcko | 2021/05/16 07:00 | Yann Wojcik v Aleksa Mardjonovic | 6-2,6-2 |