Stadium: Court 3 Round: 26 Ground: Carpet indoor
| ITF M25 Trimbach | 2022/03/16 09:00 | Gabriele Moghini v Johannes Haerteis | 5-7,4-6 |
| ITF M15 Villena | 2022/02/05 09:30 | Nikolas Sanchez Izquierdo v Johannes Haerteis | 6-3,4-6,6-2 |
| ITF M15 Villena | 2022/02/04 12:10 | Johannes Haerteis v Thomas Deschamps | 6-4,7-6 |
| ITF M15 Villena | 2022/02/03 11:15 | Johannes Haerteis v Alejandro Manzanera Pertusa | 3-6,6-0,6-2 |
| ITF M15 Villena | 2022/02/02 13:50 | Johannes Haerteis v Dali Blanch | 2-6,6-3,6-4 |
| ITF M25 Manacor | 2022/01/15 10:00 | Alberto Barroso Campos v Johannes Haerteis | 7-6,6-4 |
| ITF M25 Manacor | 2022/01/14 11:00 | Peter Heller v Johannes Haerteis | 6-7,6-4,3-6 |
| ITF M25 Manacor | 2022/01/12 10:00 | Sandro Cottino v Johannes Haerteis | 6-4,3-6,4-6 |
| ITF M25 Trimbach | 2022/03/16 13:55 | Constantin Frantzen v Leonardo Taddia | 6-4,7-5 |
| ITF M25 Trimbach | 2022/03/15 09:00 | Constantin Frantzen v Laurin Aerne | 3-6,7-6,12-10 |
| ITF M25 Trimbach | 2022/03/14 09:00 | Constantin Frantzen v Jasin Jakupi | 6-3,6-3 |
| ITF M25 Glasgow | 2022/02/17 10:00 | Anton Matusevich v Constantin Frantzen | 6-4,6-2 |
| ITF M25 Glasgow | 2022/02/15 10:00 | Felix Gill v Constantin Frantzen | 7-6,4-6,0-6 |
| ITF M25 Glasgow | 2022/02/14 09:55 | Osgar O'Hoisin v Constantin Frantzen | 3-6,2-6 |
| ITF M25 Shrewsbury | 2022/02/08 16:50 | Alastair Gray v Constantin Frantzen | 6-2,6-1 |
| ITF M25 Shrewsbury | 2022/02/07 10:00 | Joshua Paris v Constantin Frantzen | 5-7,6-7 |