Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/07/10 17:10 | Dennis Klein v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/06/22 07:10 | Dennis Klein v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2022/09/29 11:50 | Dennis Klein v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2022/08/09 09:50 | Dennis Klein v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2022/07/11 12:30 | Samuel Amann v Dennis Klein | L | 0-3 |
| Challenger Ochsenhausen | 2021/06/02 12:30 | Dennis Klein v Samuel Amann | L | 3-0 |
| Challenger Ochsenhausen | 2021/05/11 11:00 | Dennis Klein v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/09/22 09:10 | Samuel Amann v Sushmit Sriram | L | 0-3 |
| Challenger Series TT | 2023/09/22 06:30 | Samuel Amann v Marius Henninger | L | 2-3 |
| Challenger Series TT | 2023/09/21 16:30 | Samuel Amann v Alexander Valuch | L | 0-3 |
| Challenger Series TT | 2023/09/21 11:50 | Samuel Amann v Tom Colvin | L | 0-3 |
| Challenger Series TT | 2023/09/21 09:10 | Samuel Amann v Louis Price | L | 0-3 |
| Challenger Series TT | 2023/09/21 06:30 | Samuel Amann v Jeromy Loffler | L | 0-3 |
| Challenger Series TT | 2023/08/15 07:50 | Samuel Amann v Carlos Caballero | L | 0-3 |
| Challenger Series TT | 2023/08/14 18:30 | Samuel Amann v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2023/10/17 12:50 | Simon Berglund v Dennis Klein | W | 2-3 |
| Challenger Series TT | 2023/10/17 11:25 | Dauud Cheaib v Dennis Klein | W | 2-3 |
| Challenger Series TT | 2023/10/17 09:10 | Dennis Klein v Simon Berglund | L | 0-3 |
| Challenger Series TT | 2023/10/17 06:30 | Dennis Klein v Jong-Eon Yeon | W | 3-0 |
| Challenger Series TT | 2023/10/16 17:50 | Dennis Klein v Stephane Ouaiche | L | 1-3 |
| Challenger Series TT | 2023/10/16 16:30 | Dennis Klein v Carlos Caballero | W | 3-1 |
| Challenger Series TT | 2023/10/16 11:50 | Dennis Klein v Akito Itagaki | W | 3-0 |
| Challenger Series TT | 2023/10/16 09:10 | Dennis Klein v Dauud Cheaib | L | 2-3 |