Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/04/17 17:10 | Sven Happek v Makoto Nogami | W | 1-3 |
| Challenger Series TT | 2023/03/13 18:10 | Sven Happek v Makoto Nogami | L | 3-2 |
| Challenger Series TT | 2023/01/12 13:30 | Sven Happek v Makoto Nogami | L | 3-0 |
| Challenger Series TT | 2022/12/12 17:30 | Makoto Nogami v Sven Happek | L | 0-3 |
| Challenger Ochsenhausen | 2022/07/18 09:50 | Sven Happek v Makoto Nogami | W | 1-3 |
| Challenger Series TT | 2023/05/05 09:50 | Makoto Nogami v Bohdan Sinkevych | L | 2-3 |
| Challenger Series TT | 2023/05/05 06:30 | Makoto Nogami v Peter Hribar | L | 0-3 |
| Challenger Series TT | 2023/05/04 17:50 | Makoto Nogami v Akito Itagaki | W | 3-1 |
| Challenger Series TT | 2023/05/04 16:30 | Makoto Nogami v Benjamin Fruchart | L | 0-3 |
| Challenger Series TT | 2023/05/04 11:50 | Makoto Nogami v Dennis Klein | L | 2-3 |
| Challenger Series TT | 2023/05/04 09:10 | Makoto Nogami v Damian Zech | W | 3-2 |
| Challenger Series TT | 2023/05/04 06:30 | Makoto Nogami v Kirill Fadeev | L | 1-3 |
| Challenger Series TT | 2023/04/18 08:30 | Dillon Chambers v Makoto Nogami | L | 3-2 |
| Challenger Series TT | 2023/06/23 09:10 | Sven Happek v Carlo Rossi | L | 2-3 |
| Challenger Series TT | 2023/06/22 19:50 | Sven Happek v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2023/06/22 17:10 | Sven Happek v Johannes Willeke | L | 2-3 |
| Challenger Series TT | 2023/06/22 14:30 | Dennis Klein v Sven Happek | L | 3-0 |
| Challenger Series TT | 2023/06/22 11:50 | Tobias Slanina v Sven Happek | L | 3-2 |
| Challenger Series TT | 2023/06/22 09:50 | Sven Happek v Samuel Amann | W | 3-0 |
| Challenger Series TT | 2023/06/22 07:50 | Sven Happek v Ihor Zavadskyi | L | 1-3 |
| Challenger Series TT | 2023/06/20 12:50 | Jose Guillot v Sven Happek | L | 3-1 |