Stadium: Ochsenhausen, Germany
| 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 | 2023/05/09 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 | 2023/06/08 17:50 | Max Klink v Akito Itagaki | W | 0-3 |
| Challenger Series TT | 2023/06/08 15:50 | Akito Itagaki v Kirill Fadeev | L | 2-3 |
| Challenger Series TT | 2023/06/08 13:10 | Akito Itagaki v Jeromy Loffler | L | 1-3 |
| Challenger Series TT | 2023/06/08 11:10 | Akito Itagaki v Marco Stefanidis | L | 1-3 |
| Challenger Series TT | 2023/06/08 08:30 | Antonin Gavlas v Akito Itagaki | L | 3-0 |
| Challenger Series TT | 2023/06/06 09:10 | Akito Itagaki v Simon Berglund | L | 0-3 |
| Challenger Series TT | 2023/06/05 19:50 | Akito Itagaki v Antonin Gavlas | L | 0-3 |
| Challenger Series TT | 2023/06/05 17:10 | Akito Itagaki v David Molnar | W | 3-2 |