Stadium: Court 6 Round: 62 Ground: Clay
| ITF M25 Osijek | 2023/08/06 10:00 | Peter Nad v Nazar Oliynykov | 2-6,6-1,5-10 |
| ITF M15 Novi Sad | 2023/08/01 11:35 | Sergei Pogosian v Nazar Oliynykov | 6-1,6-2 |
| ITF M15 Novi Sad | 2023/08/01 07:30 | Nazar Oliynykov v Marko Andrejic | 7-5,6-1 |
| ITF M15 Novi Sad | 2023/07/25 09:35 | Pavel Verbin v Nazar Oliynykov | 6-1,6-3 |
| ITF M15 Novi Sad | 2023/07/24 11:05 | Nazar Oliynykov v Radomir Tomic | 7-5,6-2 |
| ITF M15 Novi Sad | 2023/07/23 13:00 | Samuel Paulovcak v Nazar Oliynykov | 3-6,4-6 |
| ITF M15 Brcko | 2023/05/22 07:30 | Nazar Oliynykov v Stevan Popovic | 7-5,3-6,10-7 |
| ITF M15 Brcko | 2023/05/21 11:00 | Milos Milakovic v Nazar Oliynykov | 1-6,3-6 |
| ITF M25 Osijek | 2023/08/07 07:30 | Jacques-Kai Inoue v Jaka Protic Zakelj | 6-7,0-6 |
| ITF M15 Novi Sad | 2023/07/31 11:00 | Jaka Protic Zakelj v Bautista Vilicich | 2-6,2-6 |
| ITF M15 Novi Sad | 2023/07/30 06:30 | Lukas Palovic v Jaka Protic Zakelj | 3-6,4-6 |
| ITF M15 Novi Sad | 2023/07/23 07:00 | Jaka Protic Zakelj v Attila Dominik Boros | 5-7,6-3,7-10 |
| ITF M25 Telfs | 2023/07/16 10:30 | Davide Ferrarolli v Jaka Protic Zakelj | 6-3,4-6,10-7 |
| ITF M15 Celje | 2023/06/27 07:00 | Jaka Protic Zakelj v Jakub Katuch | 3-6,6-7 |
| ITF M15 Celje | 2023/06/26 11:45 | Zsombor Velcz v Jaka Protic Zakelj | 7-5,3-6,5-10 |
| ITF M15 Store | 2023/06/19 14:15 | Jaka Protic Zakelj v Timofey Stepanov | 2-6,5-7 |