| Challenger Series TT | 05/06 14:40 | - | Dennis Klein vs Daniel Rinderer | - | View | |
| Challenger Series TT | 05/06 16:25 | - | Patrik Juhasz vs Dennis Klein | - | View | |
| Challenger Series TT | 05/06 18:10 | - | Marius Henninger vs Dennis Klein | - | View | |
| Challenger Series TT | 05/07 07:40 | - | Enio Mendes vs Dennis Klein | - | View |
| Challenger Series TT | 05/06 12:20 | - | Dennis Klein v Mike Hollo | W | 3-0 | |
| Challenger Series TT | 05/06 10:35 | - | Dennis Klein v Leonardo Iizuka | W | 3-0 | |
| Challenger Series TT | 05/06 08:15 | - | Sven Happek v Dennis Klein | W | 0-3 | |
| Challenger Series TT | 04/30 12:45 | 1 | Dennis Klein v Liang Qiu | W | 3-0 | |
| Challenger Series TT | 04/30 10:45 | 2 | Dennis Klein v Kirill Fadeev | W | 3-1 | |
| Challenger Series TT | 04/30 09:25 | - | Kirill Fadeev v Dennis Klein | W | 0-3 | |
| Challenger Series TT | 04/30 08:15 | - | Dennis Klein v Liang Qiu | W | 3-1 | |
| Challenger Series TT | 04/29 17:00 | - | Alvaro Gainza v Dennis Klein | W | 0-3 | |
| Challenger Series TT | 04/29 17:00 | - | Rafael Turrini v Dennis Klein | - | CANC | |
| Challenger Series TT | 04/29 14:40 | - | Mohammed Javad Sohrabi v Dennis Klein | L | 3-1 | |
| Challenger Series TT | 04/29 12:55 | - | Reda Nemras v Dennis Klein | W | 0-3 | |
| Challenger Series TT | 04/29 10:00 | - | Tobias Slanina v Dennis Klein | W | 0-3 |