Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 Litija | 2023/06/13 07:00 | Nikola Basic v Igor Dudun | 6-1,6-4 |
| ITF M15 Litija | 2023/06/12 11:00 | Nikola Basic v Leon Benedict | 6-3,6-0 |
| ITF M15 Sarajevo | 2023/06/08 06:55 | Jakub Paul v Nikola Basic | 6-1,6-0 |
| ITF M15 Sarajevo | 2023/06/07 08:50 | Samuel Puskar v Nikola Basic | 5-7,6-3,3-6 |
| ITF M15 Sarajevo | 2023/06/06 11:50 | Nikola Basic v Josip Simundza | 2-6,6-3,10-4 |
| ITF M15 Sarajevo | 2023/06/05 08:00 | Nikola Basic v Andrej Djokic | 6-2,6-2 |
| ITF M25 Kiseljak | 2023/05/30 09:45 | Nikola Basic v Joao Eduardo Schiessl | 4-6,0-6 |
| ITF M15 Brcko | 2023/05/22 07:30 | Kirill Mishkin v Nikola Basic | 6-3,6-3 |
| ITF M15 Constanta | 2023/06/01 08:00 | Radu Mihai Papoe v Olaf Pieczkowski | 6-1,6-4 |
| ITF M15 Constanta | 2023/05/30 10:35 | Joao Victor C Loureiro v Olaf Pieczkowski | 4-6,6-1,4-6 |
| ITF M15 Pazardzhik | 2023/05/24 14:00 | Leonardo Rossi v Olaf Pieczkowski | 7-6,7-6 |
| ITF M15 Monastir | 2023/03/22 08:30 | Olaf Pieczkowski v Buvaysar Gadamauri | 2-6,6-3,2-6 |
| ITF M15 Monastir | 2023/03/19 08:30 | Olaf Pieczkowski v Lorenzo Rottoli | 6-7,3-6 |
| ITF M15 Monastir | 2023/03/18 10:15 | Simone Roncalli v Olaf Pieczkowski | 2-6,2-6 |
| ITF M15 Monastir | 2023/03/17 11:00 | Olaf Pieczkowski v Szymon Kielan | 6-1,6-1 |
| ITF M15 Monastir | 2023/03/16 08:30 | Olaf Pieczkowski v Luigi Sorrentino | 6-3,6-4 |