Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/01/31 09:30 | Guilherme Teodoro v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/31 08:10 | Albert Vilardell v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/30 18:10 | Damian Zech v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/30 16:10 | Nikola Grujic v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/30 13:30 | Makoto Nogami v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/30 12:10 | Josip Huzjak v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/30 07:30 | Florian Bluhm v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/01/06 10:10 | Kirill Fadeev v Samuel Amann | L | 3-0 |
| Challenger Series TT | 2023/02/10 11:30 | Marco Stefanidis v Alberto Mino | L | 0-3 |
| Challenger Series TT | 2023/02/10 08:50 | Marco Stefanidis v Sourav Saha | L | 0-3 |
| Challenger Series TT | 2023/02/09 20:10 | Marco Stefanidis v Bastien Dupont | L | 1-3 |
| Challenger Series TT | 2023/02/09 15:30 | Marco Stefanidis v Andrei Putuntica | L | 0-3 |
| Challenger Series TT | 2023/02/09 13:30 | Marco Stefanidis v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/02/09 10:10 | Makoto Nogami v Marco Stefanidis | L | 3-0 |
| Challenger Series TT | 2023/02/09 08:10 | Marco Stefanidis v Bohdan Sinkevych | L | 1-3 |