Estadio: Ochsenhausen, Germany
| Challenger Series TT | 2023/04/17 11:50 | Michael Engelhardt v Sven Happek | L | 0-3 |
| Challenger Series TT | 2023/03/13 12:50 | Michael Engelhardt v Sven Happek | W | 3-1 |
| Challenger Series TT | 2022/07/11 15:50 | Michael Engelhardt v Sven Happek | L | 2-3 |
| Challenger de Ochsenhausen | 2022/05/30 14:30 | Michael Engelhardt v Sven Happek | L | 2-3 |
| Challenger de Ochsenhausen | 2022/01/13 10:10 | Sven Happek v Michael Engelhardt | L | 3-2 |
| Challenger Series TT | 2023/05/22 12:30 | Michael Engelhardt v Kirill Fadeev | L | 0-3 |
| Challenger Series TT | 2023/05/22 09:10 | Jeromy Loffler v Michael Engelhardt | W | 1-3 |
| Challenger Series TT | 2023/05/22 07:10 | Michael Engelhardt v Damian Zech | W | 3-1 |
| 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 | 2023/05/22 11:50 | Jeromy Loffler v Sven Happek | W | 0-3 |
| Challenger Series TT | 2023/05/22 09:50 | Sven Happek v Damian Zech | L | 0-3 |
| Challenger Series TT | 2023/05/22 07:50 | Sven Happek v Louis Price | W | 3-2 |
| Challenger Series TT | 2023/05/09 09:10 | Sven Happek v Humberto Manhani | L | 1-3 |
| Challenger Series TT | 2023/05/08 19:50 | Sven Happek v Antonin Gavlas | L | 0-3 |
| Challenger Series TT | 2023/05/08 17:10 | Sven Happek v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/05/08 14:30 | Anton Andersson v Sven Happek | L | 3-2 |
| Challenger Series TT | 2023/05/08 11:50 | Tobias Slanina v Sven Happek | L | 3-1 |