| Challenger Series TT | 2023/12/18 18:10 | Damian Zech v 클라인, 데니스 | L | 0-3 |
| Challenger Series TT | 2023/07/10 14:30 | Damian Zech v 클라인, 데니스 | L | 0-3 |
| Challenger Series TT | 2023/05/04 14:30 | Damian Zech v 클라인, 데니스 | L | 1-3 |
| Challenger Series TT | 2023/04/06 11:50 | Damian Zech v 클라인, 데니스 | L | 0-3 |
| Challenger Series TT | 2023/02/02 12:50 | 클라인, 데니스 v Damian Zech | L | 3-0 |
| Challenger Series TT | 2022/10/06 12:30 | Damian Zech v 클라인, 데니스 | L | 0-3 |
| Challenger Series TT | 2022/08/08 11:50 | 클라인, 데니스 v Damian Zech | L | 3-1 |
| Challenger Series TT | 2022/08/01 09:50 | Damian Zech v 클라인, 데니스 | L | 0-3 |
| Challenger Series TT | 2024/04/25 07:40 | Damian Zech v Mike Hollo | L | 1-3 |
| Challenger Series TT | 2024/04/12 08:50 | Damian Zech v Turrini, Rafael | L | 0-3 |
| Challenger Series TT | 2024/04/11 18:10 | Damian Zech v 릴로, 알베르토 | W | 3-1 |
| Challenger Series TT | 2024/04/11 15:50 | Damian Zech v Daniel Rinderer | L | 0-3 |
| Challenger Series TT | 2024/04/11 13:30 | 발루치, 알렉산더 v Damian Zech | L | 3-0 |
| Challenger Series TT | 2024/04/11 11:10 | Marco Stefanidis v Damian Zech | L | 3-1 |
| Challenger Series TT | 2024/04/11 09:25 | Damian Zech v 하페크, 스벤 | L | 0-3 |
| Challenger Series TT | 2024/04/11 07:40 | Damian Zech v Adrien Coton | L | 1-3 |
| Challenger Series TT | 2024/04/25 07:05 | 파데예프, 키릴 v 클라인, 데니스 | W | 0-3 |
| Challenger Series TT | 2024/02/27 14:30 | 추, 량 v 클라인, 데니스 | W | 1-3 |
| Challenger Series TT | 2024/02/27 13:05 | 클라인, 데니스 v Mohammed Javad Sohrabi | W | 3-0 |
| Challenger Series TT | 2024/02/27 08:50 | 발루치, 알렉산더 v 클라인, 데니스 | W | 1-3 |
| Challenger Series TT | 2024/02/26 20:50 | Samuel Amann v 클라인, 데니스 | W | 0-3 |
| Challenger Series TT | 2024/02/26 18:50 | Akito Itagaki v 클라인, 데니스 | L | 3-1 |
| Challenger Series TT | 2024/02/26 16:50 | 클라인, 데니스 v Mohammed Javad Sohrabi | W | 3-0 |
| Challenger Series TT | 2024/02/26 14:10 | 클라인, 데니스 v 하페크, 스벤 | W | 3-0 |