Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/06/19 18:30 | Carlo Rossi v Jose Guillot | W | 2-3 |
| Challenger Series TT | 2023/06/19 15:50 | Akito Itagaki v Jose Guillot | L | 3-0 |
| Challenger Series TT | 2023/06/19 13:50 | Aljaz Godec v Jose Guillot | W | 1-3 |
| Challenger Series TT | 2023/06/19 09:50 | Marco Stefanidis v Jose Guillot | W | 1-3 |
| Challenger Series TT | 2023/06/19 07:10 | Sven Happek v Jose Guillot | W | 1-3 |
| Challenger Series TT | 2023/06/16 07:50 | Liang Qiu v Jose Guillot | L | 3-1 |
| Challenger Series TT | 2023/06/16 07:10 | Enio Mendes v Jose Guillot | L | 3-0 |
| Challenger Series TT | 2023/06/15 15:50 | Yannick Vostes v Jose Guillot | L | 3-0 |
| 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 |