Stadium: Court 3 Round: 26 Ground: Clay
| ITF M15 - Litija | 2023/06/14 07:30 | Sebastian Prechtel v Tim Heger | 6-3,6-4 |
| ITF M25 - Kursumlijska Banja | 2023/06/10 08:00 | Alexander Zgirovsky v Sebastian Prechtel | 7-5,7-6 |
| ITF M25 - Kursumlijska Banja | 2023/06/09 10:05 | Sebastian Prechtel v Oleksandr Ovcharenko | 6-1,7-5 |
| ITF M25 - Kursumlijska Banja | 2023/06/08 06:55 | David Pichler v Sebastian Prechtel | 2-6,4-6 |
| ITF M25 - Kursumlijska Banja | 2023/06/07 16:55 | Sebastian Prechtel v Ivan Fomin | 6-4,6-1 |
| ITF M25 - Rom | 2023/05/30 08:00 | Sebastian Prechtel v Gabriel Debru | 1-6,5-7 |
| ITF M15 - Alaminos-Larnaca | 2023/05/14 07:30 | Filip Cristian Jianu v Sebastian Prechtel | 5-7,6-3,6-2 |
| ITF M15 - Alaminos-Larnaca | 2023/05/13 08:00 | Sebastian Prechtel v Fabrizio Andaloro | 7-5,6-0 |
| ITF M15 - Litija | 2023/06/14 07:55 | Josip Simundza v Matic Kriznik | 7-6,6-1 |
| ITF M15 - Litija | 2023/06/13 07:00 | Josip Simundza v Matic Dimic | 6-3,6-2 |
| 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 |