Stadium: ?entjur 2 Round: 25 Ground: Clay
| ITF M15 Sarajevo | 2023/06/06 11:50 | Nikola Basic v Josip Simundza | 2-6,6-3,10-4 |
| ITF M15 Hrastnik | 2024/06/05 07:50 | Luca Castagnola v Nikola Basic | 6-2,6-1 |
| ITF M15 Celje | 2024/05/22 07:30 | Matthias Ujvary v Nikola Basic | 6-2,3-6,6-2 |
| ITF M15 Osijek | 2024/04/30 08:55 | Nikola Basic v Tilen Kovac | 0-6,6-0,13-15 |
| ITF M15 Osijek | 2024/04/29 13:30 | Nikola Basic v Andrej Radojicic | 7-6,7-5 |
| ITF M15 Split | 2024/04/21 07:00 | Nikola Basic v Botond Kisantal | 0-6,7-5,4-10 |
| ITF M15 Dubrovnik | 2024/04/15 09:30 | Nikola Basic v Marino Jakic | 4-6,0-6 |
| ITF M15 Opatija | 2024/03/18 11:00 | Nikola Basic v Noah Thurner | 3-6,2-6 |
| ITF M15 Opatija | 2024/03/17 13:30 | Nikola Basic v Francesco Cano | 6-2,6-1 |
| ITF M25 Sarajevo | 2024/06/06 08:00 | Ergi Kirkin v Josip Simundza | 6-4,6-3 |
| ITF M25 Sarajevo | 2024/06/05 07:30 | Jerko Brkic v Josip Simundza | 4-6,5-7 |
| ITF M25 Sarajevo | 2024/06/04 11:00 | Josip Simundza v Tristan Nitschke | 6-1,6-3 |
| ITF M15 Bol | 2024/05/28 11:00 | Josip Simundza v Adrian Oetzbach | 4-6,1-6 |
| ITF M15 Bol | 2024/05/23 10:45 | Sebastian Sorger v Josip Simundza | 6-4,6-1 |
| ITF M15 Bol | 2024/05/22 11:40 | Josip Simundza v Nicolas Parizzia | 6-4,6-3 |
| ITF M15 Osijek | 2024/05/03 15:50 | Khumoyun Sultanov v Josip Simundza | 6-4,6-0 |
| ITF M15 Osijek | 2024/05/02 11:25 | Josip Simundza v Mirza Basic | 3-6,7-5,6-4 |