Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 Osijek | 2023/05/06 09:00 | Neil Oberleitner v Luka Mikrut | 6-2,7-5 |
| ITF M15 Osijek | 2023/05/05 12:35 | Aldin Setkic v Luka Mikrut | 3-6,6-3,3-6 |
| ITF M15 Osijek | 2023/05/04 12:40 | Luka Mikrut v Matyas Fuele | 6-4,4-6,6-4 |
| ITF M15 Osijek | 2023/05/03 11:30 | Luka Mikrut v Maj Premzl | 6-3,6-4 |
| ITF M25 Split | 2023/04/19 16:25 | Luka Mikrut v Matyas Fuele | 4-6,4-6 |
| Challenger Split | 2023/04/09 14:00 | Luka Mikrut v Benjamin Hassan | 5-7,6-7 |
| ITF M25 Dubrovnik | 2023/04/09 08:00 | Luka Mikrut v Duje Ajdukovic | 3-6,2-6 |
| ITF M25 Dubrovnik | 2023/04/08 10:00 | Aldin Setkic v Luka Mikrut | 1-6,1-6 |
| ITF M25 Kiseljak | 2023/05/30 10:55 | Nicolas Zanellato v Stefan Kostic | 6-1,6-1 |
| ITF M15 Brcko | 2023/05/23 10:00 | Stefan Kostic v Alexandre Aubriot | 0-6,1-6 |
| ITF M15 Prijedor | 2023/05/19 07:00 | Tim Ruehl v Stefan Kostic | 6-1,6-1 |
| ITF M15 Doboj | 2023/05/10 08:00 | Kirill Mishkin v Stefan Kostic | 6-2,1-6,6-1 |
| ITF M15 Zlatibor | 2022/09/11 09:45 | Stefan Kostic v Milos Vukovic | 0-6,3-6 |