Stadium: Sparkassen Court Round: 25 Ground: Clay
| Challenger Malaga | 2022/06/27 08:30 | Gabriel Decamps v Johannes Haerteis | 6-4,6-1 |
| Challenger Malaga | 2022/06/26 08:30 | David Marrero v Johannes Haerteis | 2-6,6-4,1-6 |
| ITF M25 Martos | 2022/06/16 15:30 | Johannes Haerteis v Alberto Barroso Campos | 2-6,6-3,2-6 |
| ITF M25 Martos | 2022/06/15 17:05 | Johannes Haerteis v Aaron Cohen | 6-4,6-4 |
| ITF M15 Cordoba | 2022/06/08 18:40 | Svyatoslav Gulin v Johannes Haerteis | 6-4,6-2 |
| Challenger Tunis | 2022/05/15 09:30 | Shintaro Mochizuki v Johannes Haerteis | 7-5,3-6,6-1 |
| Challenger Heilbronn | 2022/05/08 14:50 | Alexey Vatutin v Johannes Haerteis | 3-6,4-6 |
| Challenger Mauthausen | 2022/05/01 11:45 | Lucas Miedler v Johannes Haerteis | 7-6,6-2 |
| Challenger Luedenscheid | 2022/06/26 09:00 | Max Wiskandt v Sumit Nagal | 6-7,6-7 |
| ITF M25 Arlon | 2022/06/20 16:15 | Max Wiskandt v Alexander Hoogmartens | 2-6,6-1,15-17 |
| ITF M15 Duffel | 2022/06/12 12:00 | Max Wiskandt v Sander Jong | 1-6,1-6 |
| ITF M15 Bytom | 2022/06/07 08:00 | Max Wiskandt v Daniel Paty | 6-2,3-6,8-10 |
| ITF M15 Bytom | 2022/06/06 08:00 | Max Wiskandt v Piotr Galus | 6-2,6-3 |
| ITF M15 Heraklion | 2022/05/30 09:00 | Max Wiskandt v Vadym Konovchuk | 5-7,6-2,8-10 |
| ITF M15 Heraklion | 2022/05/29 12:00 | Max Wiskandt v Zury Cohen | 6-0,6-2 |
| ITF M25 Trier | 2021/08/25 09:00 | Max Wiskandt v Raphael Calzi | 7-5,4-6,2-6 |