Stadium: Ochsenhausen, Germany
| Challenger - Series TT | 2023/03/13 18:10 | Sven Happek v Makoto Nogami | W | 3-2 |
| Challenger - Series TT | 2023/01/12 13:30 | Sven Happek v Makoto Nogami | W | 3-0 |
| Challenger - Series TT | 2022/12/12 17:30 | Makoto Nogami v Sven Happek | W | 0-3 |
| Challenger Ochsenhausen | 2022/07/18 09:50 | Sven Happek v Makoto Nogami | L | 1-3 |
| Challenger - Series TT | 2023/04/17 14:30 | Damian Zech v Sven Happek | W | 0-3 |
| Challenger - Series TT | 2023/04/17 11:50 | Michael Engelhardt v Sven Happek | W | 0-3 |
| Challenger - Series TT | 2023/04/17 09:50 | Sven Happek v Dillon Chambers | L | 1-3 |
| Challenger - Series TT | 2023/04/17 07:50 | Sven Happek v Siddharta Almeida | L | 2-3 |
| Challenger - Series TT | 2023/04/03 12:30 | Dennis Klein v Sven Happek | L | 3-1 |
| Challenger - Series TT | 2023/04/03 11:10 | Dauud Cheaib v Sven Happek | L | 3-0 |
| Challenger - Series TT | 2023/04/03 06:30 | Pekka Pelz v Sven Happek | L | 3-0 |
| TT Star Series | 2023/03/25 11:15 | Henning Zeptner v Sven Happek | W | 0-3 |
| Challenger - Series TT | 2023/04/17 15:10 | Siddharta Almeida v Makoto Nogami | W | 2-3 |
| Challenger - Series TT | 2023/04/17 12:30 | Damian Zech v Makoto Nogami | L | 3-2 |
| Challenger - Series TT | 2023/04/17 11:10 | Dauud Cheaib v Makoto Nogami | L | 3-2 |
| Challenger - Series TT | 2023/04/17 06:30 | Michael Engelhardt v Makoto Nogami | L | 3-2 |
| Challenger - Series TT | 2023/04/07 08:30 | Dimitrije Levajac v Makoto Nogami | W | 2-3 |
| Challenger - Series TT | 2023/04/07 07:10 | Yannick Vostes v Makoto Nogami | L | 3-0 |
| Challenger - Series TT | 2023/04/06 17:10 | Dennis Klein v Makoto Nogami | L | 3-1 |
| Challenger - Series TT | 2023/04/06 15:10 | Yonghun Lee v Makoto Nogami | L | 3-0 |