Ground: Clay
| ITF M15 Brcko | 2023/05/25 12:05 | Stefan Popovic v Adam Moundir | 6-3,6-3 |
| ITF M15 Brcko | 2023/05/24 12:25 | Daniel Rodrigues v Stefan Popovic | 1-6,3-6 |
| ITF M15 Prijedor | 2023/05/20 10:45 | Stefan Popovic v Andrej Nedic | 1-6,0-6 |
| ITF M15 Prijedor | 2023/05/20 07:00 | Ergi Kirkin v Stefan Popovic | 4-6,2-6 |
| ITF M15 Prijedor | 2023/05/19 10:45 | Nikola Basic v Stefan Popovic | 2-6,5-7 |
| ITF M15 Prijedor | 2023/05/18 14:15 | Lucio Ratti v Stefan Popovic | 2-6,3-6 |
| ITF M15 Doboj | 2023/05/13 07:30 | Ergi Kirkin v Stefan Popovic | 2-6,6-3,6-4 |
| ITF M15 Doboj | 2023/05/12 08:35 | Lautaro Agustin Falabella v Stefan Popovic | 6-3,0-6,0-6 |
| UTR Pro Thessaloniki | 2023/04/28 05:00 | Christos Keisidis v Andreas Loizas | 2-5 |
| UTR Pro Thessaloniki | 2023/04/27 05:00 | Christos Keisidis v Samuel Kyjaci | 3-6,2-6 |
| UTR Pro Thessaloniki | 2023/04/26 09:43 | Ivan Kremenchutskyi v Christos Keisidis | 2-6,7-6,7-6 |
| UTR Pro Thessaloniki | 2023/04/25 06:30 | Vasile Antonescu v Christos Keisidis | 6-4,6-3 |
| UTR Pro Beograd | 2023/04/22 07:30 | Christos Keisidis v Matija Samardzic | 3-6,0-5 |
| UTR Pro Beograd | 2023/04/21 08:46 | Christos Keisidis v Petr Nesterov | 3-6,4-0 |
| UTR Pro Beograd | 2023/04/20 06:00 | Christos Keisidis v Vanja Hodzic | 6-2,6-2 |
| UTR Pro Beograd | 2023/04/19 08:05 | Radomir Tomic v Christos Keisidis | 6-0,6-2 |