Stadium: Court 6 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Split | 2023/04/19 14:15 | Jan Kupcic v Matic Dimic | 0-6,4-6 |
| ITF M25 Split | 2023/04/18 09:45 | Jan Kupcic v Ivan Kremenchutskyi | 6-4,6-2 |
| ITF M25 Split | 2023/04/17 14:10 | Jan Kupcic v Gabriel Gomez | 6-0,6-2 |
| ITF M25 Split | 2023/04/17 07:00 | Jan Kupcic v Ognjen Pavlovic | 6-1,6-0 |
| ITF M25 Opatija | 2023/03/19 10:30 | Andrea Bolla v Jan Kupcic | 6-3,2-6,10-3 |
| ITF M15 Rovinj | 2023/03/14 11:20 | Pavel Nejedly v Jan Kupcic | 6-3,7-5 |
| ITF M15 Rovinj | 2023/03/13 09:00 | Jan Kupcic v Gabriel Matuszewski | 6-2,4-6,10-8 |
| ITF M15 Rovinj | 2023/03/12 12:00 | Hans Peter Kaufmann v Jan Kupcic | 1-6,6-7 |
| ITF M15 Duffel | 2023/06/16 11:00 | Ryan Nijboer v John Sperle | 6-4,4-6,6-3 |
| ITF M15 Duffel | 2023/06/15 08:00 | John Sperle v Simon Beaupain | 7-6,4-6,7-6 |
| ITF M15 Duffel | 2023/06/13 08:00 | John Sperle v Alessio Basile | 6-4,6-4 |
| ITF M15 Duffel | 2023/06/12 12:00 | John Sperle v Edouard Villoslada | 6-3,6-2 |
| ITF M15 Duffel | 2023/06/11 12:30 | John Sperle v Isac Stroemberg | 6-3,6-2 |
| Challenger Troisdorf | 2023/05/28 10:25 | Terence Atmane v John Sperle | 6-3,6-4 |
| ITF M25 Bodrum | 2023/05/23 09:00 | John Sperle v Jules Marie | 1-6,2-6 |
| ITF M25 Bodrum | 2023/05/22 07:55 | John Sperle v Kuzma Gomziakov | 6-1,6-0 |