| Challenger Series TT | 2022/07/11 11:10 | Michael Engelhardt v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2022/06/16 06:30 | Michael Engelhardt v Dennis Klein | L | 1-3 |
| Challenger Ochsenhausen | 2021/07/28 11:50 | Michael Engelhardt v Dennis Klein | L | 0-3 |
| Challenger Ochsenhausen | 2021/07/26 18:00 | Michael Engelhardt v Dennis Klein | L | 0-3 |
| Challenger Ochsenhausen | 2021/06/10 07:10 | Michael Engelhardt v Dennis Klein | L | 0-3 |
| Challenger Ochsenhausen | 2021/05/10 11:50 | Dennis Klein v Michael Engelhardt | L | 3-2 |
| Challenger Series TT | 2022/07/28 18:30 | Damian Zech v Michael Engelhardt | W | 2-3 |
| Challenger Ochsenhausen | 2022/07/28 15:50 | Elia Schmid v Michael Engelhardt | L | 3-1 |
| Challenger Ochsenhausen | 2022/07/28 13:50 | Kenan Hrnic v Michael Engelhardt | L | 3-1 |
| Challenger Ochsenhausen | 2022/07/28 09:50 | Liang Qiu v Michael Engelhardt | L | 3-1 |
| Challenger Ochsenhausen | 2022/07/28 07:10 | Mohammadali Rouintanesfahani v Michael Engelhardt | L | 3-1 |
| Challenger Series TT | 2022/07/12 07:50 | Samuel Amann v Michael Engelhardt | W | 2-3 |
| Challenger Series TT | 2022/07/11 19:50 | Felix Kleeberg v Michael Engelhardt | W | 1-3 |
| Challenger Series TT | 2022/07/11 17:50 | Kirill Fadeev v Michael Engelhardt | W | 1-3 |
| Challenger Series TT | 2022/07/29 07:10 | Kenan Hrnic v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2022/07/28 17:10 | Liang Qiu v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2022/07/28 15:10 | Damian Zech v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2022/07/28 12:30 | Mohammadali Rouintanesfahani v Dennis Klein | W | 1-3 |
| Challenger Ochsenhausen | 2022/07/28 11:10 | Elia Schmid v Dennis Klein | L | 3-2 |
| Challenger Ochsenhausen | 2022/07/28 06:30 | Evgeny Fadeev v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2022/07/28 06:30 | Kirill Fadeev v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2022/07/12 13:30 | Dennis Klein v Amir Hossein Hodaei | L | 1-3 |