Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Novi Sad | 2023/07/30 08:30 | Miha Vetrih v Jan Kupcic | 6-7,6-4,10-8 |
| ITF M15 Novi Sad | 2023/07/25 07:30 | Tom Paris v Jan Kupcic | 6-2,6-3 |
| ITF M15 Novi Sad | 2023/07/24 07:30 | Marcell Bartakovics v Jan Kupcic | 4-6,4-6 |
| ITF M15 Novi Sad | 2023/07/23 07:00 | Niccolo Ciavarella v Jan Kupcic | 3-6,3-6 |
| ITF M15 Celje | 2023/06/29 07:30 | Jan Kupcic v Sebastian Sorger | 5-7,6-7 |
| ITF M15 Celje | 2023/06/28 13:05 | Maurus Malgiaritta v Jan Kupcic | 6-7,4-6 |
| ITF M15 Store | 2023/06/19 07:55 | Ivan Kremenchutskyi v Jan Kupcic | 6-4,6-3 |
| ITF M25 Split | 2023/04/19 14:15 | Jan Kupcic v Matic Dimic | 0-6,4-6 |
| ITF M25 Kramsach | 2023/07/24 09:00 | Manuel Plunger v Stepan Pecak | 6-1,6-2 |
| ITF M25 Kramsach | 2023/07/23 12:00 | Nico Jaeger v Stepan Pecak | 0-6,6-7 |
| ITF M25 Kramsach | 2023/07/23 07:00 | Gabriel Moroder v Stepan Pecak | 1-6,1-6 |
| ITF M25 Telfs | 2023/07/17 07:00 | Adam Blecha v Stepan Pecak | 6-3,6-1 |
| ITF M25 Telfs | 2023/07/16 07:00 | Stepan Pecak v Martin Zeljenka | 6-4,1-6,10-2 |
| ITF M15 Kamen | 2023/06/26 15:00 | Stepan Pecak v Matyas Cerny | 5-7,3-6 |
| ITF M15 Kamen | 2023/06/26 08:00 | Nico Hornitschek v Stepan Pecak | 6-7,1-6 |
| ITF M25 Poprad | 2023/06/19 08:00 | Radovan Michalik v Stepan Pecak | 6-0,7-6 |