Stadium: Court 1 Oberhaching Round: 25 Ground: Hardcourt indoor
| ITF M15 Oberhaching | 2023/02/13 11:30 | Mick Veldheer v Federico Bertuccioli | 6-1,6-3 |
| ITF M15 Oberhaching | 2023/02/12 16:00 | Mick Veldheer v Timofey Stepanov | 6-3,6-3 |
| ITF M15 Vilnius | 2023/01/18 08:50 | Martyn Pawelski v Mick Veldheer | 4-6,6-7 |
| ITF M15 Vilnius | 2023/01/17 14:00 | Olaf Pieczkowski v Mick Veldheer | 1-6,2-6 |
| ITF M25 Trnava | 2022/11/30 10:50 | Mick Veldheer v Michal Krajci | 1-6,3-6 |
| ITF M25 Heraklion | 2022/11/25 08:00 | Mick Veldheer v Daniel Cukierman | 3-6,2-6 |
| ITF M25 Heraklion | 2022/11/24 10:50 | Mick Veldheer v Neil Oberleitner | 7-6,7-6 |
| ITF M25 Heraklion | 2022/11/23 07:00 | Mick Veldheer v Francois Musitelli | 1-6,6-3,6-2 |
| ITF M25 Bath | 2023/02/07 12:10 | George Loffhagen v Johannes Haerteis | 6-3,6-3 |
| Challenger Koblenz | 2023/01/31 17:35 | Alexey Vatutin v Johannes Haerteis | 7-6,6-1 |
| Challenger Koblenz | 2023/01/30 10:00 | Jeremy Jahn v Johannes Haerteis | 4-6,4-6 |
| Challenger Koblenz | 2023/01/29 13:45 | Johannes Haerteis v Andrea Arnaboldi | 6-4,6-4 |
| ITF M25 Nussloch | 2023/01/25 11:50 | Johannes Haerteis v Elmar Ejupovic | 5-7,6-7 |
| Challenger Drummondville | 2022/11/13 21:25 | Evan King v Johannes Haerteis | 7-6,2-6,2-6 |
| Challenger Calgary | 2022/11/08 23:55 | Johannes Haerteis v Gabriel Decamps | 5-7,4-6 |
| Challenger Calgary | 2022/11/07 18:50 | Alafia Ayeni v Johannes Haerteis | 4-6,3-6 |