| German Open | 01/28 09:15 | - | Dennis Klein v Daniel Gonzalez | W | 4-1 | |
| German Open | 10/08 11:00 | - | Wang-Wei Peng v Dennis Klein | L | 4-1 | |
| Serbia Open | 05/02 09:35 | - | Dennis Klein v Jakub Zelinka | W | 3-1 | |
| Serbia Open | 05/01 15:40 | - | Dennis Klein v Yuriy Nadolnyy | W | 3-1 | |
| Czech Republic Extraleague | 03/23 13:25 | - | Par Gerell v Dennis Klein | L | 4-1 | |
| Czech Republic Extraleague | 03/22 13:30 | - | Dennis Klein v Felipe Olivares | W | 4-1 | |
| Czech Republic Extraleague | 03/21 12:40 | - | Dennis Klein v Mehdi Bouloussa | W | 3-1 | |
| Czech Republic Extraleague | 11/15 16:45 | 1 | Harmeet Desai v Dennis Klein | L | 4-0 | |
| Qatar Open XD | 11/14 12:20 | 1 | Yuhao Li v Dennis Klein | W | 2-3 | |
| Czech Republic Extraleague | 11/14 06:50 | 1 | Dennis Klein v Ilya Berezin | W | 4-1 | |
| Czech Republic Extraleague | 10/23 14:35 | 1 | Dennis Klein v Jakub Zelinka | W | 4-2 | |
| Qatar Open XD | 03/20 09:40 | 1 | Dennis Klein v Thibaut Darcis | W | 3-0 | |
| Qatar Open XD | 03/09 12:30 | 1 | Darko Jorgic v Dennis Klein | L | 4-1 | |
| Qatar Open XD | 03/08 14:50 | 1 | Dennis Klein v Helshan Weerasinghe | W | 4-1 | |
| Qatar Open XD | 11/24 08:30 | 1 | Dennis Klein v Miguel Vilchez | W | 3-1 | |
| Qatar Open XD | 11/23 08:53 | - | Dennis Klein v Jeet Chandra | W | 3-1 | |
| Qatar Open XD | 11/22 15:25 | - | Dennis Klein v Daniel Palacios | W | 3-1 | |
| Qatar Open XD | 11/07 14:40 | 1 | Antoine Hachard v Dennis Klein | D | Retired | |
| Qatar Open XD | 11/03 08:35 | 1 | Shunsuke Togami v Dennis Klein | L | 3-2 | |
| Qatar Open XD | 11/02 10:20 | 1 | Dennis Klein v Sadi Ismailov | W | 3-2 | |
| Qatar Open XD | 04/27 11:30 | 1 | Andreas Levenko v Dennis Klein | L | 4-1 | |
| Qatar Open XD | 02/02 08:47 | - | Dennis Klein v Tomasz Kotowski | L | 2-4 | |
| Qatar Open Women | 12/18 15:22 | - | Bohumil Vozicky v Dennis Klein | L | 3-0 | |
| Qatar Open Women | 12/15 20:09 | - | Tomas Tregler v Dennis Klein | L | 3-1 | |
| Qatar Open Women | 12/15 18:48 | - | Aleksandar Karakasevic v Dennis Klein | L | 3-0 | |
| Qatar Open Women | 09/22 17:04 | - | Dennis Klein v Florent Lambiet | L | 1-4 | |
| Qatar Open Women | 09/22 13:23 | - | Cazuo Matsumoto v Dennis Klein | W | 2-4 |