Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2022/11/11 08:50 | Karl Zimmermann v Dillon Chambers | W | 3-0 |
| Challenger Series TT | 2023/03/10 08:50 | Karl Zimmermann v Guilherme Teodoro | L | 1-3 |
| Challenger Series TT | 2023/03/09 20:10 | Karl Zimmermann v Thibault Poret | L | 0-3 |
| Challenger Series TT | 2023/03/09 15:30 | Karl Zimmermann v Damian Zech | W | 3-0 |
| Challenger Series TT | 2023/03/09 13:30 | Karl Zimmermann v Samuel Amann | W | 3-0 |
| Challenger Series TT | 2023/03/09 10:10 | Kirill Fadeev v Karl Zimmermann | L | 3-1 |
| Challenger Series TT | 2023/03/09 08:10 | Karl Zimmermann v Dimitrije Levajac | L | 0-3 |
| Challenger Series TT | 2022/12/13 09:30 | Kenan Hrnic v Karl Zimmermann | W | 1-3 |
| Challenger Series TT | 2022/12/13 08:10 | Sven Happek v Karl Zimmermann | W | 1-3 |
| Challenger Series TT | 2023/03/10 07:30 | Kirill Fadeev v Dillon Chambers | L | 3-0 |
| Challenger Series TT | 2023/03/09 19:30 | Dillon Chambers v Dimitrije Levajac | W | 3-0 |
| Challenger Series TT | 2023/03/09 16:10 | Dillon Chambers v Samuel Amann | W | 3-2 |
| Challenger Series TT | 2023/03/09 14:10 | Guilherme Teodoro v Dillon Chambers | L | 3-2 |
| Challenger Series TT | 2023/03/09 11:30 | Thibault Poret v Dillon Chambers | L | 3-1 |
| Challenger Series TT | 2023/03/09 08:50 | Damian Zech v Dillon Chambers | W | 1-3 |
| Challenger Series TT | 2023/03/03 10:10 | Albert Vilardell v Dillon Chambers | L | 3-0 |
| Challenger Series TT | 2023/03/03 08:10 | Dillon Chambers v Damian Zech | W | 3-1 |