Stadium: Court 1 Round: 54 Ground: Clay
| ITF M15 Litija | 2023/06/12 07:00 | Zak Talic v Josip Simundza | 1-6,3-6 |
| ITF M15 Sarajevo | 2023/06/06 11:50 | Nikola Basic v Josip Simundza | 2-6,6-3,10-4 |
| ITF M15 Osijek | 2023/05/03 09:40 | Josip Simundza v Mohamed Safwat | 1-6,1-6 |
| ITF M25 Split | 2023/04/20 10:45 | Gergely Madarasz v Josip Simundza | 7-5,6-2 |
| ITF M25 Split | 2023/04/20 07:30 | Paul Woerner v Josip Simundza | 3-6,2-6 |
| Challenger Split | 2023/04/09 09:20 | Dane Sweeny v Josip Simundza | 6-3,6-3 |
| ITF M25 Dubrovnik | 2023/04/05 12:10 | Josip Simundza v Simon A Ivanov | 2-6,4-6 |
| UTR Pro Zadar | 2023/04/01 12:30 | Josip Simundza v Tim Heger | 6-3,5-4 |
| ITF M15 Litija | 2023/06/12 07:00 | Artem Podorozhnyi v Matic Dimic | 3-6,6-3,2-10 |
| ITF M15 Krsko | 2023/05/18 10:25 | Matic Dimic v Oliver Ojakaar | 3-6,4-6 |
| ITF M15 Kursumlijska Banja | 2023/05/02 12:45 | Samir Hamza Reguig v Matic Dimic | 6-0,6-4 |
| ITF M15 Kursumlijska Banja | 2023/04/25 10:25 | Gorazd Srbljak v Matic Dimic | 6-0,5-7,10-8 |
| ITF M15 Kursumlijska Banja | 2023/04/24 15:15 | Danilo Raicevic v Matic Dimic | 6-7,3-6 |
| ITF M25 Split | 2023/04/20 10:50 | Matic Dimic v Mirza Basic | 2-6,2-6 |
| ITF M25 Split | 2023/04/19 14:15 | Jan Kupcic v Matic Dimic | 0-6,4-6 |
| ITF M25 Split | 2023/04/18 07:55 | Matic Dimic v Eldin Nokic | 6-4,6-1 |