Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/03/03 09:30 | Marco Stefanidis v Damian Zech | W | 1-3 |
| Challenger Series TT | 2023/05/04 19:10 | Damian Zech v Benjamin Fruchart | L | 2-3 |
| Challenger Series TT | 2023/05/04 14:30 | Damian Zech v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/05/04 12:30 | Damian Zech v Kirill Fadeev | L | 1-3 |
| Challenger Series TT | 2023/05/04 09:10 | Makoto Nogami v Damian Zech | L | 3-2 |
| Challenger Series TT | 2023/05/04 07:10 | Damian Zech v Bohdan Sinkevych | W | 3-2 |
| Challenger Series TT | 2023/04/21 07:10 | Miguel Nunez v Damian Zech | L | 3-1 |
| Challenger Series TT | 2023/04/20 15:10 | Humberto Manhani v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/04/20 13:50 | Rafael Turrini v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/03/03 10:50 | Liang Qiu v Marco Stefanidis | L | 3-0 |
| Challenger Series TT | 2023/03/03 09:30 | Marco Stefanidis v Damian Zech | L | 1-3 |
| Challenger Series TT | 2023/03/02 19:30 | Guilherme Teodoro v Marco Stefanidis | L | 3-0 |
| Challenger Series TT | 2023/03/02 16:50 | Anton Limonov v Marco Stefanidis | L | 3-1 |
| Challenger Series TT | 2023/03/02 14:50 | Dillon Chambers v Marco Stefanidis | L | 3-0 |
| Challenger Series TT | 2023/03/02 10:50 | Albert Vilardell v Marco Stefanidis | L | 3-1 |
| Challenger Series TT | 2023/03/02 08:10 | Samuel Amann v Marco Stefanidis | W | 1-3 |
| Challenger Series TT | 2023/02/10 11:30 | Marco Stefanidis v Alberto Mino | L | 0-3 |