| Challenger Series TT | 2023/07/03 14:30 | Tobias Slanina v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/06/22 09:10 | Tobias Slanina v Dennis Klein | L | 2-3 |
| Challenger Series TT | 2023/05/08 06:30 | Tobias Slanina v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/08/17 18:30 | Makoto Nogami v Tobias Slanina | L | 3-2 |
| Challenger Series TT | 2023/08/17 15:50 | Alvaro Gainza v Tobias Slanina | L | 3-1 |
| Challenger Series TT | 2023/08/17 13:50 | Marius Henninger v Tobias Slanina | L | 3-0 |
| Challenger Series TT | 2023/08/17 09:50 | Kirill Fadeev v Tobias Slanina | L | 3-1 |
| Challenger Series TT | 2023/08/17 07:10 | Daniel Rinderer v Tobias Slanina | L | 3-1 |
| Challenger Series TT | 2023/08/11 09:50 | Tobias Slanina v Zengyi Wang | W | 3-1 |
| Challenger Series TT | 2023/08/11 06:30 | Tobias Slanina v Simon Pfeffer | L | 1-3 |
| Challenger Series TT | 2023/08/10 17:50 | Tobias Slanina v Florian Bourrassaud | L | 0-3 |
| Challenger Series TT | 2023/08/18 07:10 | Marius Henninger v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/08/17 17:10 | Kirill Fadeev v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/08/17 15:10 | Makoto Nogami v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/08/17 12:30 | Daniel Rinderer v Dennis Klein | W | 2-3 |
| Challenger Series TT | 2023/08/17 11:10 | Alvaro Gainza v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/08/17 06:30 | Marco Stefanidis v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/07/27 09:50 | Dennis Klein v Antonin Gavlas | L | 0-3 |
| Challenger Series TT | 2023/07/27 07:50 | Dennis Klein v Guillaume Alcayde | W | 3-1 |