Stadium: Court 2 Round: 26 Ground: Clay
| ITF M15 - Antalya | 2023/03/22 10:25 | Peter Heller v Berk Ilkel | 6-3,6-1 |
| ITF M15 - Antalya | 2023/02/28 10:55 | Alexander Weis v Peter Heller | 4-6,6-3,7-5 |
| ITF M15 - Antalya | 2023/02/23 08:45 | Alex M Pujolras v Peter Heller | 6-3,3-6,6-1 |
| ITF M15 - Antalya | 2023/02/22 08:05 | Peter Heller v Matthias Ujvary | 6-4,6-0 |
| ITF M25 Nussloch | 2023/01/27 10:00 | Daniel Masur v Peter Heller | 6-3,6-4 |
| ITF M25 Nussloch | 2023/01/26 11:40 | Peter Heller v Max Hans Rehberg | 7-6,4-6,6-1 |
| ITF M25 Nussloch | 2023/01/24 11:45 | Yannik Kelm v Peter Heller | 5-7,2-6 |
| ITF M15 - Antalya | 2022/10/28 07:30 | Nicolas Parizzia v Peter Heller | 6-1,6-4 |
| ITF M15 - Antalya | 2023/03/22 09:55 | Dax Donders v Igor Gimenez | 7-6,2-6,6-2 |
| ITF M15 - Antalya | 2023/03/21 07:00 | Dax Donders v Frederic Schlossmann | 4-6,7-5,10-8 |
| ITF M15 - Antalya | 2023/03/20 07:00 | Dax Donders v Gabriel Schenekenberg | 6-1,6-3 |
| ITF M15 - Antalya | 2023/03/19 07:00 | Dax Donders v Kaya Arinc | 6-4,6-4 |
| ITF M25 Al Zahra | 2023/01/26 07:00 | Dax Donders v Prajnesh Gunneswaran | 3-6,2-6 |
| ITF M25 Al Zahra | 2023/01/25 13:40 | Igor Dudun v Dax Donders | 4-6,2-6 |
| ITF M25 Al Zahra | 2023/01/24 08:00 | Dax Donders v Alexey Shtengelov | 6-3,6-1 |
| ITF M15 Dauhá | 2023/01/12 13:50 | Dax Donders v Bernard Tomic | 4-6,5-7 |