Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2024/01/29 16:50 | Sven Happek v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2024/01/15 13:30 | Sven Happek v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/11/13 07:30 | Dennis Klein v Sven Happek | W | 3-0 |
| Challenger Series TT | 2023/06/22 14:30 | Dennis Klein v Sven Happek | W | 3-0 |
| Challenger Series TT | 2023/06/19 09:10 | Dennis Klein v Sven Happek | W | 3-1 |
| Challenger Series TT | 2023/05/08 17:10 | Sven Happek v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2023/04/03 12:30 | Dennis Klein v Sven Happek | W | 3-1 |
| Challenger Series TT | 2023/03/06 19:30 | Sven Happek v Dennis Klein | W | 1-3 |
| 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 |
| Challenger Series TT | 2024/01/30 09:30 | Dennis Klein v Benjamin Fruchart | L | 2-3 |
| Challenger Series TT | 2024/01/29 19:30 | Dauud Cheaib v Dennis Klein | L | 3-2 |
| Challenger Series TT | 2024/01/29 16:50 | Sven Happek v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2024/02/26 11:30 | Liang Qiu v Sven Happek | L | 3-0 |
| Challenger Series TT | 2024/02/26 08:50 | Samuel Amann v Sven Happek | W | 1-3 |
| Challenger Series TT | 2024/02/06 13:50 | Sven Happek v Dauud Cheaib | L | 1-3 |
| Challenger Series TT | 2024/02/06 12:25 | Rafael Turrini v Sven Happek | L | 3-1 |
| Challenger Series TT | 2024/02/06 11:30 | Sven Happek v Aljaz Godec | W | 3-2 |
| Challenger Series TT | 2024/02/06 08:50 | Sven Happek v Rafael Turrini | L | 0-3 |
| Challenger Series TT | 2024/02/05 20:10 | Sven Happek v Marc Miro Llorente | W | 3-1 |
| Challenger Series TT | 2024/02/05 15:30 | Sven Happek v Makoto Nogami | W | 3-2 |