Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/12/19 09:30 | Akito Itagaki v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/11/13 12:50 | Dennis Klein v Akito Itagaki | L | 3-1 |
| Challenger Series TT | 2023/10/16 11:50 | Dennis Klein v Akito Itagaki | L | 3-0 |
| Challenger Series TT | 2023/07/03 09:50 | Dennis Klein v Akito Itagaki | L | 3-0 |
| Challenger Series TT | 2023/06/19 17:50 | Dennis Klein v Akito Itagaki | L | 3-0 |
| Challenger Series TT | 2023/05/04 19:50 | Dennis Klein v Akito Itagaki | L | 3-1 |
| TT Star Series | 2024/01/06 12:45 | Akito Itagaki v Miroslav Horejsi | L | 0-3 |
| TT Star Series | 2024/01/06 09:45 | Akito Itagaki v Romualdo Manna | L | 0-3 |
| TT Star Series | 2024/01/06 07:35 | Akito Itagaki v Daniel Rinderer | L | 0-3 |
| TT Star Series | 2024/01/05 13:45 | Akito Itagaki v Jakub Folwarski | L | 2-3 |
| TT Star Series | 2024/01/05 11:15 | Akito Itagaki v Giacomo Allegranza | W | 3-1 |
| TT Star Series | 2024/01/05 09:15 | Akito Itagaki v Bohuslav Koszyk | L | 0-3 |
| TT Star Series | 2024/01/05 07:00 | Akito Itagaki v Radim Bako | L | 0-3 |
| TT Star Series | 2024/01/04 11:45 | Akito Itagaki v Jiri Martinko | L | 0-3 |
| Challenger Series TT | 2024/01/16 14:30 | Dennis Klein v Takumi Kageyama | W | 3-0 |
| Challenger Series TT | 2024/01/16 12:25 | Dennis Klein v Norbert Tauler | W | 3-1 |
| Challenger Series TT | 2024/01/16 09:30 | Francesco Maragioglio v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2024/01/16 08:10 | Takumi Kageyama v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2024/01/15 18:10 | Jean Rassouw v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2024/01/15 16:10 | Mathias Golab v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2024/01/15 13:30 | Sven Happek v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2024/01/15 12:10 | Norbert Tauler v Dennis Klein | W | 1-3 |