| Challenger Series TT | 2023/05/04 11:50 | Makoto Nogami v Dennis Klein | L | 2-3 |
| Challenger Series TT | 2023/04/06 17:10 | Dennis Klein v Makoto Nogami | L | 3-1 |
| Challenger Series TT | 2023/03/27 14:30 | Makoto Nogami v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/02/09 07:30 | Makoto Nogami v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/08/17 13:10 | Alvaro Gainza v Makoto Nogami | W | 2-3 |
| Challenger Series TT | 2023/08/17 10:30 | Marius Henninger v Makoto Nogami | L | 3-2 |
| Challenger Series TT | 2023/08/17 07:50 | Kirill Fadeev v Makoto Nogami | L | 3-1 |
| Challenger Series TT | 2023/08/15 11:30 | Dauud Cheaib v Makoto Nogami | L | 3-0 |
| Challenger Series TT | 2023/08/15 10:45 | Carlos Caballero v Makoto Nogami | L | 3-1 |
| Challenger Series TT | 2023/08/15 09:10 | Daniel Rinderer v Makoto Nogami | W | 2-3 |
| Challenger Series TT | 2023/08/15 06:30 | Marcel Neumaier v Makoto Nogami | W | 0-3 |
| Challenger Series TT | 2023/08/14 17:10 | Makoto Nogami v Marco Stefanidis | L | 1-3 |
| 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 |
| Challenger Series TT | 2023/07/11 13:30 | Dennis Klein v Benjamin Fruchart | W | 3-0 |
| Challenger Series TT | 2023/07/11 11:25 | Dennis Klein v Akos Kishegyi | W | 3-0 |
| Challenger Series TT | 2023/07/11 09:10 | Dennis Klein v Armin Alicic | W | 3-1 |