stadio: Court 2 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Osijek | 2023/08/08 11:15 | Dusan Obradovic v Josip Simundza | 6-3,6-4 |
| ITF M15 Celje | 2023/06/27 08:45 | Josip Simundza v Maurus Malgiaritta | 2-6,6-7 |
| ITF M15 Celje | 2023/06/26 09:30 | Michal Novansky v Josip Simundza | 2-6,4-6 |
| ITF M15 Store | 2023/06/20 08:00 | Filip Jeff Planinsek v Josip Simundza | 3-6,6-3,10-8 |
| ITF M15 Store | 2023/06/19 12:50 | Edison Ambarzumjan v Josip Simundza | 4-6,3-6 |
| ITF M15 Litija | 2023/06/15 11:50 | Sebastian Prechtel v Josip Simundza | 7-5,6-1 |
| 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 Vienna | 2023/08/28 08:00 | Gregor Hausberger v Vojtech Vlkovsky | 1-6,6-4,8-10 |
| ITF M15 Kottingbrunn | 2023/08/14 08:00 | Marcell Bartakovics v Gregor Hausberger | 6-2,6-1 |
| ITF M15 Kottingbrunn | 2023/08/13 08:00 | Gregor Hausberger v Tamas Foldi | 6-4,7-6 |
| ITF M25 Osijek | 2023/08/07 11:35 | Gregor Hausberger v Aleksei Khomich | 6-4,3-6,3-10 |
| ITF M25 Kramsach | 2023/07/25 13:00 | Syl Gaxherri v Gregor Hausberger | 6-3,6-2 |
| ITF M25 Dubrovnik | 2023/04/03 12:15 | Andrej Nedic v Gregor Hausberger | 6-2,6-4 |
| ITF M25 Dubrovnik | 2023/04/02 07:00 | Matija Samardzic v Gregor Hausberger | 6-3,3-6,8-10 |
| ITF M25 Antalya | 2023/02/05 07:00 | Simone Agostini v Gregor Hausberger | 7-6,7-6 |