Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/03/03 09:30 | Marco Stefanidis v Damian Zech | L | 1-3 |
| Challenger Series TT | 2023/07/20 06:30 | Marco Stefanidis v Jeromy Loffler | L | 0-3 |
| Challenger Series TT | 2023/06/20 09:10 | Marco Stefanidis v Aljaz Godec | W | 3-2 |
| Challenger Series TT | 2023/06/19 19:50 | Marco Stefanidis v Akito Itagaki | L | 1-3 |
| Challenger Series TT | 2023/06/19 17:10 | Marco Stefanidis v Johannes Willeke | W | 3-0 |
| Challenger Series TT | 2023/06/19 14:30 | Sven Happek v Marco Stefanidis | L | 3-1 |
| Challenger Series TT | 2023/06/19 11:50 | Dennis Klein v Marco Stefanidis | L | 3-0 |
| Challenger Series TT | 2023/06/19 09:50 | Marco Stefanidis v Jose Guillot | L | 1-3 |
| Challenger Series TT | 2023/06/19 07:50 | Marco Stefanidis v Carlo Rossi | L | 1-3 |
| Challenger Series TT | 2023/07/20 07:10 | Damian Zech v Amirreza Abbasi | L | 1-3 |
| Challenger Series TT | 2023/07/11 10:30 | Damian Zech v Akos Kishegyi | L | 2-3 |
| Challenger Series TT | 2023/07/11 07:50 | Damian Zech v Kestutis Zeimys | L | 0-3 |
| Challenger Series TT | 2023/07/10 19:10 | Damian Zech v Armin Alicic | L | 1-3 |
| Challenger Series TT | 2023/07/10 14:30 | Damian Zech v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/07/10 12:30 | Damian Zech v Samuel Amann | W | 3-1 |
| Challenger Series TT | 2023/07/10 09:10 | Johannes Willeke v Damian Zech | W | 1-3 |
| Challenger Series TT | 2023/07/10 07:10 | Damian Zech v Benjamin Fruchart | L | 0-3 |