Stadium: Sport Center Visnjik Court 6 (Clay) Ground: Clay
Referee:
| ITF M25 Maribor | 2025/08/28 09:30 | Karlo Kajin v Mirza Basic | 4-6,0-5 |
| ITF M25 Maribor | 2025/08/27 11:30 | Lun Obrul v Karlo Kajin | 2-6,3-6 |
| ITF M25 Maribor | 2025/08/26 10:15 | Nik Mikovic v Karlo Kajin | 4-6,4-6 |
| ITF M25 Maribor | 2025/08/19 08:00 | Aljaz Jeran v Karlo Kajin | 6-7,6-2,1-0 |
| ITF M15 Slovenska Bistrica | 2025/08/06 14:22 | Karlo Kajin v Attila Dominik Boros | 4-6,4-6 |
| UTR Pro Monterol | 2025/07/13 07:00 | Emilio Sanchez v Karlo Kajin | 2-6,3-6 |
| UTR Pro Monterol | 2025/07/12 09:00 | Karlo Kajin v Glib Sekachov | 6-4,6-2 |
| UTR Pro Monterol | 2025/07/10 10:20 | Karlo Kajin v Peter Goldsteiner | 3-6,4-6 |