Stadium: Ochsenhausen, Germany
| 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 | 2023/06/08 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 | 2023/06/19 06:30 | Dennis Klein v Johannes Willeke | L | 3-0 |