Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/06/09 09:10 | Tobias Slanina v Antonin Gavlas | L | 0-3 |
| Challenger Series TT | 2023/06/08 19:50 | Tobias Slanina v Akito Itagaki | L | 0-3 |
| Challenger Series TT | 2023/06/08 17:10 | Tobias Slanina v Marco Stefanidis | W | 3-1 |
| 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 | 2023/06/20 08:30 | Jose Guillot v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2023/06/20 07:10 | Aljaz Godec v Johannes Willeke | L | 3-0 |
| Challenger Series TT | 2023/06/19 17:10 | Marco Stefanidis v Johannes Willeke | L | 3-0 |
| Challenger Series TT | 2023/06/19 15:10 | Carlo Rossi v Johannes Willeke | L | 3-0 |
| Challenger Series TT | 2023/06/19 12:30 | Sven Happek v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2023/06/19 11:10 | Akito Itagaki v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2023/06/19 06:30 | Dennis Klein v Johannes Willeke | L | 3-0 |