Estadio: Ochsenhausen, Germany
| Challenger Series TT | 2023/06/19 13:10 | Akito Itagaki v Carlo Rossi | L | 0-3 |
| Challenger Series TT | 2023/06/19 11:10 | Akito Itagaki v Johannes Willeke | W | 3-1 |
| Challenger Series TT | 2023/06/19 08:30 | Aljaz Godec v Akito Itagaki | W | 1-3 |
| Challenger Series TT | 2023/06/09 07:50 | Florian Bluhm v Akito Itagaki | L | 3-0 |
| Challenger Series TT | 2023/06/08 19:50 | Tobias Slanina v Akito Itagaki | W | 0-3 |
| 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 | 2023/06/19 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 | 2023/06/15 13:50 | Dauud Cheaib v Jose Guillot | L | 3-1 |
| Challenger Series TT | 2023/06/15 11:10 | Zengyi Wang v Jose Guillot | L | 3-1 |