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 | 2024/02/26 18:10 | Samuel Amann v Haruki Harada | L | 0-3 |
| Challenger Series TT | 2024/02/26 15:30 | Alexander Valuch v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2024/02/26 12:50 | Akito Itagaki v Samuel Amann | W | 2-3 |
| Challenger Series TT | 2024/02/26 10:50 | Samuel Amann v Mohammed Javad Sohrabi | L | 1-3 |
| Challenger Series TT | 2024/02/26 08:50 | Samuel Amann v Sven Happek | L | 1-3 |
| Challenger Series TT | 2024/01/26 10:10 | Samuel Amann v Sudhanshu Grover | L | 0-3 |
| Challenger Series TT | 2024/01/25 20:50 | Samuel Amann v Manuel Kupfer | L | 1-3 |
| Challenger Series TT | 2024/01/25 18:10 | Samuel Amann v Alberto Lillo | L | 0-3 |
| Challenger Series TT | 2024/02/26 18:50 | Akito Itagaki v Dennis Klein | L | 3-1 |
| Challenger Series TT | 2024/02/26 16:50 | Dennis Klein v Mohammed Javad Sohrabi | W | 3-0 |
| Challenger Series TT | 2024/02/26 14:10 | Dennis Klein v Sven Happek | W | 3-0 |
| Challenger Series TT | 2024/02/26 12:10 | Dennis Klein v Haruki Harada | L | 2-3 |
| Challenger Series TT | 2024/02/26 09:30 | Liang Qiu v Dennis Klein | W | 2-3 |
| Challenger Series TT | 2024/01/30 14:30 | Alberto Lillo v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2024/01/30 13:05 | Dennis Klein v Marius Henninger | W | 3-0 |
| Challenger Series TT | 2024/01/30 10:50 | Adrien Coton v Dennis Klein | W | 0-3 |