Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/02/09 07:30 | Makoto Nogami v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/03/27 12:30 | Makoto Nogami v Jeromy Loffler | L | 1-3 |
| Challenger Series TT | 2023/03/27 09:10 | Kirill Fadeev v Makoto Nogami | L | 3-0 |
| Challenger Series TT | 2023/03/27 07:10 | Makoto Nogami v Dillon Chambers | W | 3-0 |
| Challenger Series TT | 2023/03/14 09:30 | Peter Hribar v Makoto Nogami | W | 0-3 |
| Challenger Series TT | 2023/03/14 08:10 | Ahmed El-Mahdy v Makoto Nogami | L | 3-1 |
| Challenger Series TT | 2023/03/13 18:10 | Sven Happek v Makoto Nogami | L | 3-2 |
| Challenger Series TT | 2023/03/13 16:10 | Dauud Cheaib v Makoto Nogami | L | 3-2 |
| Challenger Series TT | 2023/03/13 13:30 | Felix Kohler v Makoto Nogami | L | 3-2 |
| Challenger Series TT | 2023/03/27 11:50 | Kirill Fadeev v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/03/27 09:50 | Dennis Klein v Dillon Chambers | L | 2-3 |
| Challenger Series TT | 2023/03/27 07:50 | Dennis Klein v Bohdan Sinkevych | W | 3-0 |
| Challenger Series TT | 2023/03/07 14:30 | Dennis Klein v Dauud Cheaib | W | 3-2 |
| Challenger Series TT | 2023/03/07 12:25 | Dennis Klein v Peter Hribar | W | 3-1 |
| Challenger Series TT | 2023/03/07 10:50 | Aljaz Godec v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2023/03/07 09:30 | Dennis Klein v Peter Hribar | L | 2-3 |
| Challenger Series TT | 2023/03/06 19:30 | Sven Happek v Dennis Klein | W | 1-3 |