Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/05/29 10:30 | Dauud Cheaib v Karl Zimmermann | L | 3-0 |
| Challenger Series TT | 2024/09/16 10:00 | Karl Zimmermann v Diego Lillo | W | 3-0 |
| Challenger Series TT | 2024/09/16 08:00 | Jeromy Loffler v Karl Zimmermann | L | 3-0 |
| Challenger Series TT | 2023/08/04 08:30 | Hannes Hormann v Karl Zimmermann | L | 3-1 |
| Challenger Series TT | 2023/08/04 07:10 | Bohdan Sinkevych v Karl Zimmermann | L | 3-1 |
| Challenger Series TT | 2023/08/03 17:10 | Marco Stefanidis v Karl Zimmermann | W | 2-3 |
| Challenger Series TT | 2023/08/03 15:10 | Zengyi Wang v Karl Zimmermann | L | 3-1 |
| Challenger Series TT | 2023/08/03 12:30 | Daniel Rinderer v Karl Zimmermann | L | 3-1 |
| Challenger Series TT | 2023/08/03 11:10 | Anton Limonov v Karl Zimmermann | L | 3-0 |
| Challenger Series TT | 2024/09/16 09:30 | Jeromy Loffler v Dauud Cheaib | L | 3-0 |
| Challenger Series TT | 2024/09/16 07:30 | Minsu Kim v Dauud Cheaib | L | 3-2 |
| Challenger Series TT | 2024/09/10 10:45 | Louis Price v Dauud Cheaib | W | 0-3 |
| Challenger Series TT | 2024/09/10 09:45 | Dauud Cheaib v Vincent Senkbeil | L | 2-3 |
| Challenger Series TT | 2024/09/10 07:30 | Marco Stefanidis v Dauud Cheaib | W | 0-3 |
| Challenger Series TT | 2024/09/09 17:30 | Dauud Cheaib v Fodor Csaba | W | 3-0 |
| Challenger Series TT | 2024/09/09 16:00 | Dennis Klein v Dauud Cheaib | L | 3-0 |
| Challenger Series TT | 2024/09/09 14:00 | Oliver Both v Dauud Cheaib | W | 0-3 |