Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/03/13 07:30 | Michael Engelhardt v Makoto Nogami | W | 3-0 |
| Challenger Series TT | 2023/02/14 11:50 | Michael Engelhardt v Arman Hajiei | W | 3-1 |
| Challenger Series TT | 2023/02/14 10:25 | Amirreza Abbasi v Michael Engelhardt | L | 3-0 |
| Challenger Series TT | 2023/02/14 08:50 | Michael Engelhardt v Amirreza Abbasi | L | 0-3 |
| Challenger Series TT | 2023/02/14 07:30 | Michael Engelhardt v Alberto Lillo | L | 1-3 |
| Challenger Series TT | 2023/02/13 14:50 | Michael Engelhardt v Louis Price | W | 3-0 |
| Challenger Series TT | 2023/02/13 11:30 | Michael Engelhardt v Miguel Nunez | L | 2-3 |
| Challenger Series TT | 2023/02/13 09:30 | Arman Hajiei v Michael Engelhardt | W | 2-3 |
| Challenger Series TT | 2023/03/13 08:10 | Felix Kohler v Peter Hribar | L | 0-3 |
| Challenger Series TT | 2022/11/22 09:30 | Rafael Turrini v Felix Kohler | L | 3-0 |
| Challenger Series TT | 2022/11/21 19:30 | Felix Kleeberg v Felix Kohler | W | 1-3 |
| Challenger Series TT | 2022/11/21 16:50 | Florian Bluhm v Felix Kohler | L | 3-0 |
| Challenger Series TT | 2022/11/21 14:50 | Sven Happek v Felix Kohler | L | 3-2 |
| Challenger Series TT | 2022/11/21 10:50 | Salim Karam v Felix Kohler | W | 0-3 |
| Challenger Series TT | 2022/11/21 08:10 | Josip Huzjak v Felix Kohler | L | 3-0 |
| Challenger Series TT | 2022/09/06 08:30 | Felix Kohler v Dauud Cheaib | L | 0-3 |