Stadium: MTA 02 Round: 26 Ground: Clay
| ITF M25 Telfs | 2023/07/18 10:00 | Peter Heller v Niklas Schell | 6-3,6-1 |
| ITF M15 Antalya | 2024/01/11 08:25 | Gabriel Donev v Niklas Schell | 4-6,4-6 |
| ITF M15 Sharm El Sheikh | 2023/11/23 08:50 | Mats Moraing v Niklas Schell | 6-0,6-1 |
| ITF M15 Sharm El Sheikh | 2023/11/22 13:40 | Valentin Kopeikin v Niklas Schell | 2-6,5-7 |
| ITF M15 Al Zahra | 2023/11/04 12:00 | Niklas Schell v Tomas Lanik | 5-7,6-7 |
| ITF M15 Al Zahra | 2023/11/03 08:00 | Mousa Alkotop v Niklas Schell | 4-6,1-6 |
| ITF M15 Al Zahra | 2023/11/02 10:30 | Issei Okamura v Niklas Schell | 6-7,1-6 |
| ITF M15 Al Zahra | 2023/11/01 07:00 | Jannik Maute v Niklas Schell | 3-6,4-6 |
| ITF M15 Al Zahra | 2023/10/26 07:00 | Mousa Alkotop v Niklas Schell | 4-6,7-5,7-6 |
| ITF M15 Antalya | 2024/01/11 08:05 | David Prasievi v Peter Heller | 1-6,1-6 |
| Czech Republic Extraliga | 2023/12/18 10:00 | Peter Heller v Matyas Cerny | 7-6,6-7,3-6 |
| ITF M25 Heraklion | 2023/11/09 07:30 | Vladyslav Orlov v Peter Heller | 6-4,6-3 |
| ITF M25 Heraklion | 2023/11/02 08:00 | Peter Heller v Enrico Dalla Valle | 3-6,3-6 |
| ITF M25 Heraklion | 2023/11/01 06:50 | Peter Heller v Alexandros Skorilas | 6-2,6-2 |
| ITF M15 Bad Waltersdorf | 2023/10/04 09:45 | Jan Kupcic v Peter Heller | 6-3,6-4 |
| ITF M25 Sabadell | 2023/09/26 10:20 | Imanol L Morillo v Peter Heller | 7-6,2-6,6-4 |
| ITF M25 Madrid | 2023/09/17 11:00 | Aidan Mchugh v Peter Heller | 6-4,7-5 |