Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/08/17 18:30 | Makoto Nogami v Tobias Slanina | L | 3-2 |
| Challenger Series TT | 2023/07/13 08:30 | Tobias Slanina v Makoto Nogami | W | 3-1 |
| Challenger Series TT | 2023/09/08 10:30 | Tobias Slanina v Corentin Mazaud | L | 0-3 |
| Challenger Series TT | 2023/09/08 07:50 | Tobias Slanina v Oliver Both | L | 0-3 |
| Challenger Series TT | 2023/09/07 19:10 | Tobias Slanina v Dauud Cheaib | L | 2-3 |
| Challenger Series TT | 2023/09/07 14:30 | Tobias Slanina v Rafael Turrini | L | 0-3 |
| Challenger Series TT | 2023/09/07 12:30 | Tobias Slanina v Kirill Fadeev | L | 1-3 |
| Challenger Series TT | 2023/09/07 09:10 | Dennis Klein v Tobias Slanina | L | 3-1 |
| Challenger Series TT | 2023/09/07 07:10 | Tobias Slanina v Miguel Nunez | L | 1-3 |
| Challenger Series TT | 2023/08/18 09:50 | Marco Stefanidis v Tobias Slanina | W | 2-3 |
| Challenger Series TT | 2023/09/26 09:50 | Makoto Nogami v Hannes Hoermann | W | 3-1 |
| Challenger Series TT | 2023/09/26 06:30 | Makoto Nogami v Guilherme Teodoro | L | 0-3 |
| Challenger Series TT | 2023/09/25 17:50 | Makoto Nogami v Armin Alicic | L | 2-3 |
| Challenger Series TT | 2023/09/25 16:30 | Makoto Nogami v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2023/09/25 11:50 | Makoto Nogami v Alexander Valuch | L | 2-3 |
| Challenger Series TT | 2023/09/25 09:10 | Makoto Nogami v Jeromy Loffler | L | 2-3 |
| Challenger Series TT | 2023/09/25 06:30 | Makoto Nogami v Marius Henninger | W | 3-1 |
| Challenger Series TT | 2023/08/18 10:30 | Daniel Rinderer v Makoto Nogami | L | 3-2 |