Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/06/08 14:30 | Florian Bluhm v Tobias Slanina | L | 3-1 |
| Challenger Series TT | 2023/06/08 11:50 | Max Klink v Tobias Slanina | W | 1-3 |
| Challenger Series TT | 2023/06/08 09:50 | Tobias Slanina v Kirill Fadeev | L | 1-3 |
| Challenger Series TT | 2023/06/08 07:50 | Tobias Slanina v Jeromy Loffler | L | 1-3 |
| Challenger Series TT | 2023/05/09 09:50 | Tobias Slanina v Amirreza Abbasi | L | 0-3 |
| Challenger Series TT | 2023/05/09 06:30 | Tobias Slanina v Anton Limonov | W | 3-2 |
| Challenger Series TT | 2023/05/08 17:50 | Tobias Slanina v Antonin Gavlas | L | 2-3 |
| Challenger Series TT | 2023/05/08 16:30 | Tobias Slanina v Humberto Manhani | L | 0-3 |
| Challenger Series TT | 2023/06/08 15:10 | Jeromy Loffler v Marco Stefanidis | L | 3-1 |
| Challenger Series TT | 2023/06/08 12:30 | Florian Bluhm v Marco Stefanidis | L | 3-2 |
| Challenger Series TT | 2023/06/08 11:10 | Akito Itagaki v Marco Stefanidis | W | 1-3 |
| Challenger Series TT | 2023/06/08 06:30 | Max Klink v Marco Stefanidis | W | 1-3 |
| 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 |