| Challenger Series TT | 2023/05/05 11:25 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/05/04 17:10 | Dennis Klein v Kirill Fadeev | L | 3-1 |
| Challenger Series TT | 2023/05/02 11:25 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/05/01 09:10 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/04/06 14:30 | Kirill Fadeev v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/04/04 10:05 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/04/03 14:30 | Dennis Klein v Kirill Fadeev | L | 3-2 |
| Challenger Series TT | 2023/03/27 11:50 | Kirill Fadeev v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/07/03 09:10 | Kirill Fadeev v Tobias Slanina | W | 3-1 |
| Challenger Series TT | 2023/07/03 06:30 | Kirill Fadeev v Daniel Rinderer | W | 3-1 |
| Challenger Series TT | 2023/06/30 13:30 | Kirill Fadeev v Carlo Rossi | L | 0-3 |
| Challenger Series TT | 2023/06/30 11:25 | Liang Qiu v Kirill Fadeev | W | 2-3 |
| Challenger Series TT | 2023/06/30 09:50 | Jeromy Loffler v Kirill Fadeev | W | 0-3 |
| Challenger Series TT | 2023/06/30 08:30 | Kirill Fadeev v Felix Kohler | W | 3-2 |
| Challenger Series TT | 2023/06/29 18:30 | Bohdan Sinkevych v Kirill Fadeev | W | 1-3 |
| Challenger Series TT | 2023/06/29 15:50 | Dauud Cheaib v Kirill Fadeev | W | 1-3 |
| Challenger Series TT | 2023/07/03 09:50 | Dennis Klein v Akito Itagaki | W | 3-0 |
| Challenger Series TT | 2023/07/03 07:50 | Dennis Klein v David Reitspies | W | 3-1 |
| Challenger Series TT | 2023/06/23 13:30 | Dennis Klein v Dauud Cheaib | W | 3-0 |
| Challenger Series TT | 2023/06/23 11:32 | Dennis Klein v Igor Zavadskij | W | 3-0 |
| Challenger Series TT | 2023/06/23 11:25 | Dennis Klein v Ihor Zavadskyi | W | 3-0 |
| Challenger Series TT | 2023/06/23 07:50 | Dennis Klein v Dauud Cheaib | W | 3-0 |
| Challenger Series TT | 2023/06/22 19:10 | Dennis Klein v Carlo Rossi | W | 3-1 |
| Challenger Series TT | 2023/06/22 14:30 | Dennis Klein v Sven Happek | W | 3-0 |