Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/04/17 09:10 | Michael Engelhardt v Damian Zech | W | 3-0 |
| Challenger Series TT | 2022/08/08 14:30 | Michael Engelhardt v Damian Zech | W | 3-2 |
| Challenger Series TT | 2022/08/01 17:10 | Damian Zech v Michael Engelhardt | L | 3-0 |
| Challenger Series TT | 2022/07/28 18:30 | Damian Zech v Michael Engelhardt | W | 2-3 |
| Challenger Series TT | 2022/06/13 13:50 | Michael Engelhardt v Damian Zech | W | 3-2 |
| Challenger Ochsenhausen | 2022/03/03 07:30 | Michael Engelhardt v Damian Zech | W | 3-0 |
| Challenger Series TT | 2023/05/02 08:30 | Benjamin Fruchart v Michael Engelhardt | L | 3-1 |
| Challenger Series TT | 2023/05/02 07:10 | Alexander Sverdlik v Michael Engelhardt | W | 2-3 |
| Challenger Series TT | 2023/05/01 17:10 | Nico Longhino v Michael Engelhardt | L | 3-2 |
| Challenger Series TT | 2023/05/01 15:10 | Snehit Suravajjula v Michael Engelhardt | L | 3-0 |
| Challenger Series TT | 2023/05/01 12:30 | Kirill Fadeev v Michael Engelhardt | L | 3-0 |
| Challenger Series TT | 2023/05/01 11:10 | George Downing v Michael Engelhardt | W | 1-3 |
| Challenger Series TT | 2023/05/01 06:30 | Dennis Klein v Michael Engelhardt | L | 3-0 |
| Challenger Series TT | 2023/04/18 09:50 | Michael Engelhardt v Dillon Chambers | L | 2-3 |
| Challenger Series TT | 2023/05/04 07:10 | Damian Zech v Bohdan Sinkevych | W | 3-2 |
| Challenger Series TT | 2023/04/21 07:10 | Miguel Nunez v Damian Zech | L | 3-1 |
| Challenger Series TT | 2023/04/20 15:10 | Humberto Manhani v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/04/20 13:50 | Rafael Turrini v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/04/20 11:50 | Sven Happek v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/04/20 10:30 | Martin Andersen v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/04/20 06:30 | Tobias Slanina v Damian Zech | L | 3-1 |
| Challenger Series TT | 2023/04/18 10:30 | Damian Zech v Siddharta Almeida | L | 1-3 |