| Challenger Series TT | 2023/07/06 09:50 | Dennis Klein v David Reitspies | W | 3-0 |
| Challenger Series TT | 2023/07/03 07:50 | Dennis Klein v David Reitspies | W | 3-1 |
| Challenger Series TT | 2023/02/07 13:50 | David Reitspies v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2023/02/07 08:10 | David Reitspies v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2023/07/07 11:25 | Dennis Klein v Liang Qiu | W | 3-1 |
| Challenger Series TT | 2023/07/07 09:10 | Dennis Klein v Mathias Golab | W | 3-1 |
| Challenger Series TT | 2023/07/06 19:50 | Dennis Klein v Benjamin Fruchart | W | 3-1 |
| Challenger Series TT | 2023/07/06 17:10 | Dennis Klein v Liang Qiu | W | 3-1 |
| Challenger Series TT | 2023/07/06 14:30 | Hannes Hormann v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/07/06 11:50 | Johannes Willeke v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/07/06 09:50 | Dennis Klein v David Reitspies | W | 3-0 |
| Challenger Series TT | 2023/07/06 07:50 | Dennis Klein v Dauud Cheaib | W | 3-1 |
| Challenger Series TT | 2023/07/07 12:05 | David Reitspies v Benjamin Fruchart | W | 3-1 |
| Challenger Series TT | 2023/07/07 09:50 | Johannes Willeke v David Reitspies | W | 0-3 |
| Challenger Series TT | 2023/07/07 08:30 | David Reitspies v Liang Qiu | L | 1-3 |
| Challenger Series TT | 2023/07/06 18:30 | Dauud Cheaib v David Reitspies | W | 0-3 |
| Challenger Series TT | 2023/07/06 15:50 | Benjamin Fruchart v David Reitspies | W | 1-3 |
| Challenger Series TT | 2023/07/06 13:50 | Mathias Golab v David Reitspies | W | 0-3 |
| Challenger Series TT | 2023/07/06 09:50 | Dennis Klein v David Reitspies | L | 3-0 |
| Challenger Series TT | 2023/07/06 07:10 | Hannes Hormann v David Reitspies | W | 1-3 |