| 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 | 2022/07/11 08:30 | Daniel Rinderer v Michael Engelhardt | L | 3-0 |
| Challenger Series TT | 2022/06/17 06:30 | Michael Engelhardt v Simon Berglund | L | 0-3 |
| Challenger Series TT | 2022/06/16 17:50 | Michael Engelhardt v Elia Schmid | W | 3-1 |
| Challenger Series TT | 2022/06/16 16:30 | Michael Engelhardt v Amirreza Abbasi | L | 0-3 |
| Challenger Series TT | 2022/06/16 11:50 | Michael Engelhardt v Sudhanshu Grover | L | 1-3 |
| Challenger Series TT | 2022/06/16 09:10 | Michael Engelhardt v Kirill Fadeev | L | 0-3 |
| Challenger Series TT | 2022/06/16 06:30 | Michael Engelhardt v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2022/06/14 09:10 | Michael Engelhardt v Eusebio Vos | L | 2-3 |
| Challenger Series TT | 2022/07/11 06:30 | Kirill Fadeev v Dennis Klein | W | 2-3 |
| Challenger Ochsenhausen | 2022/06/24 13:30 | Simon Berglund v Dennis Klein | L | 3-1 |
| Challenger Ochsenhausen | 2022/06/24 13:05 | Amirreza Abbasi v Dennis Klein | W | 1-3 |
| Challenger Ochsenhausen | 2022/06/24 09:50 | Dennis Klein v Simon Berglund | W | 3-1 |
| Challenger Ochsenhausen | 2022/06/24 06:30 | Dennis Klein v Mohammadali Rouintanesfahani | W | 3-1 |
| Challenger Ochsenhausen | 2022/06/23 17:50 | Dennis Klein v Albert Vilardell | W | 3-2 |
| Challenger Ochsenhausen | 2022/06/23 16:30 | Dennis Klein v Josip Huzjak | W | 3-0 |
| Challenger Ochsenhausen | 2022/06/23 11:50 | Dennis Klein v Amirreza Abbasi | L | 1-3 |