| ITF M15 Novi Sad | 2021/08/01 10:45 | Michalis Sakellaridis v Aleksa Mardjonovic | 2-6,2-6 |
| ITF M15 Novi Sad | 2021/07/25 09:30 | Nemanja Malesevic v Michalis Sakellaridis | 2-6,6-4,10-3 |
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Toby Martin v Michalis Sakellaridis | 6-1,6-2 |
| UTR Pro Tennis Series Beograd | 2021/07/11 10:00 | Michalis Sakellaridis v Stefan Latinov | 1-6,2-6 |
| UTR Pro Tennis Series Beograd | 2021/07/10 13:00 | Michalis Sakellaridis v Aleksei Khomich | 6-4,0-0 |
| UTR Pro Tennis Series Beograd | 2021/07/09 07:30 | Dusan Obradovic v Michalis Sakellaridis | 6-4,5-4 |
| UTR Pro Tennis Series Beograd | 2021/07/08 09:00 | Constant De La Bassetiere v Michalis Sakellaridis | 6-2,5-4 |
| UTR Pro Tennis Series Beograd | 2021/07/06 14:00 | Nikola Slavic v Michalis Sakellaridis | 6-3,6-6 |
| ITF M15 Novi Sad | 2021/08/03 11:50 | Michal Novansky v Petar Pjevcevic | 6-4,7-6 |
| ITF M15 Novi Sad | 2021/07/25 10:45 | Aziz Kijametovic v Petar Pjevcevic | 6-1,6-3 |
| ITF M25 Belgrade | 2021/06/28 07:00 | Petar Pjevcevic v Mirko Martinez | 2-6,2-6 |
| ITF M25 Belgrade | 2021/06/27 07:00 | Aleksandar Tomas v Petar Pjevcevic | 3-6,1-6 |
| ITF M15 Skopje | 2021/06/07 11:30 | Petar Pjevcevic v Hugo Pontico | 4-6,4-6 |
| ITF M15 Skopje | 2021/06/06 12:00 | Aleksa Bucan v Petar Pjevcevic | 4-6,3-6 |
| ITF M15 Sarajevo | 2021/05/30 10:30 | Nikolas Lahky v Petar Pjevcevic | 6-3,7-5 |
| ITF M15 Brcko | 2021/05/16 09:30 | Dusan Obradovic v Petar Pjevcevic | 6-4,6-0 |