Estadio: VOLKSBANK Court Round: 26 Ground: Clay
| ITF M15 Ueberlingen | 2023/08/16 13:10 | Jakob Schnaitter v Justin Engel | 7-6,6-1 |
| ITF M15 Frankfurt Am Main | 2023/08/13 09:00 | Lucas Gerch v Jakob Schnaitter | 6-4,6-1 |
| ITF M15 Frankfurt Am Main | 2023/08/11 10:00 | Aleksandre Metreveli v Jakob Schnaitter | 6-7,2-6 |
| ITF M15 Frankfurt Am Main | 2023/08/09 13:00 | Jakob Schnaitter v Marcel Zielinski | 6-7,6-2,6-2 |
| ITF M25 Cattolica | 2023/06/20 12:00 | Andrea Picchione v Jakob Schnaitter | 6-7,6-4,7-6 |
| ITF M15 Nyíregyháza | 2023/06/09 12:00 | Dragos Nicolae Madaras v Jakob Schnaitter | 6-3,6-3 |
| ITF M15 Nyíregyháza | 2023/06/08 08:00 | Martyn Pawelski v Jakob Schnaitter | 6-4,2-6,6-7 |
| ITF M15 Nyíregyháza | 2023/06/07 08:00 | Jakob Schnaitter v Gergely Madarasz | 6-4,6-3 |
| ITF M15 Ueberlingen | 2023/08/16 16:00 | Filippo Speziali v Peter Heller | 2-6,3-6 |
| ITF M15 Eupen | 2023/08/12 12:15 | Peter Heller v Marc Majdandzic | 5-7,1-6 |
| ITF M15 Eupen | 2023/08/11 09:00 | Cesar Bouchelaghem v Peter Heller | 2-6,0-6 |
| ITF M15 Eupen | 2023/08/10 09:00 | Abel Forger v Peter Heller | 2-6,3-6 |
| ITF M15 Eupen | 2023/08/09 13:00 | Brian Bozemoj v Peter Heller | 4-6,1-6 |
| Challenger de San Marino | 2023/07/30 10:25 | Peter Heller v Marcello Serafini | 4-6,4-6 |
| ITF M25 Kramsach | 2023/07/28 09:00 | Oliver Crawford v Peter Heller | 6-3,6-4 |
| ITF M25 Kramsach | 2023/07/27 13:45 | Kai Wehnelt v Peter Heller | 5-7,4-6 |