Stadium: Court 3 Round: 25 Ground: Clay
| Challenger - Oeiras | 2022/04/04 09:30 | Ergi Kirkin v Haerteis, Johannes | 6-3,6-2 |
| Challenger Oeiras Qual | 2022/04/03 09:00 | Arjun Kadhe v Haerteis, Johannes | 6-3,5-7,1-6 |
| Marbella, Spain | 2022/03/28 08:00 | Alexander Shevchenko v Haerteis, Johannes | 6-3,6-2 |
| Marbella, Spain | 2022/03/27 09:00 | Haerteis, Johannes v Elliot Benchetrit | 7-5,6-2 |
| Challenger Biel | 2022/03/20 12:35 | Haerteis, Johannes v Pervolarakis, Michail | 3-6,2-6 |
| ITF - M25 Trimbach | 2022/03/19 13:50 | Leandro Riedi v Haerteis, Johannes | 6-4,6-4 |
| ITF - M25 Trimbach | 2022/03/18 12:15 | Otto Virtanen v Haerteis, Johannes | 4-6,6-4,4-6 |
| ITF - M25 Trimbach | 2022/03/17 09:00 | Haerteis, Johannes v Frantzen, Constantin | 6-3,6-7,6-2 |
| ITF - M25 Santa Margherita | 2022/04/25 11:55 | Felix Mischker v Michalis Sakellaridis | 6-4,6-7,10-7 |
| UK Pro League | 2022/04/09 13:00 | Sam Reeve v Felix Mischker | 6-1,6-2 |
| UK Pro League | 2022/04/06 12:00 | Felix Mischker v Recci, Mason | 1-6,2-6 |
| UK Pro League | 2022/04/04 13:00 | Billy Harris v Felix Mischker | 6-1,6-4 |
| UK Pro League | 2022/04/03 10:00 | Felix Mischker v Ying Hou | 6-7,6-2,10-5 |
| UK Pro League | 2021/09/18 15:30 | Matthew Doe v Felix Mischker | 6-3,6-3 |
| UK Pro League | 2021/09/17 14:00 | Ying Hou v Felix Mischker | 6-7,6-1,10-7 |
| UK Pro League | 2021/09/16 11:30 | Giles Hussey v Felix Mischker | 6-0,6-1 |