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 | 2023/05/16 09:10 | David Molnar v Damian Zech | L | 3-2 |
| Challenger Series TT | 2023/05/16 08:10 | Yannick Vostes v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/05/16 05:10 | Miguel Nunez v Damian Zech | L | 3-1 |
| Challenger Series TT | 2023/05/15 15:10 | Norbert Tauler v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/05/15 12:30 | Akos Kishegyi v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/05/15 11:10 | Dauud Cheaib v Damian Zech | L | 3-1 |
| Challenger Series TT | 2023/05/15 06:30 | Marius Henninger v Damian Zech | L | 3-2 |
| Challenger Series TT | 2023/05/05 10:30 | Damian Zech v Peter Hribar | L | 0-3 |