| European Champions League | 12/09 18:50 | - | Claus Nielsen v Andrej Gacina | L | 0-3 | |
| Qatar Open - GD | 05/30 12:00 | 1 | Claus Nielsen v Alfredas Udra | - | Retired | |
| Qatar Open - Dames | 05/29 11:00 | 1 | Claus Nielsen v Vazir Allahverdiyev | W | 4-0 | |
| Qatar Open - Dames | 03/07 17:00 | - | Adam Szudi v Claus Nielsen | L | 3-0 | |
| Qatar Open - GD | 02/03 16:27 | - | Sadi Ismailov v Claus Nielsen | L | 4-2 | |
| Qatar Open - GD | 02/02 13:19 | - | David Reitspies v Claus Nielsen | W | 3-4 | |
| Qatar Open - GD | 01/17 08:15 | - | Rares Sipos v Claus Nielsen | L | 3-0 | |
| Qatar Open - Dames | 12/16 20:21 | - | Claus Nielsen v Fedor Kuzmin | W | 3-0 | |
| Qatar Open - Dames | 12/02 19:27 | - | Christophe Legout v Claus Nielsen | L | 3-1 | |
| Qatar Open - Dames | 11/25 18:51 | - | Claus Nielsen v Hugo Calderano | L | 0-3 | |
| Qatar Open - Dames | 11/25 16:37 | - | Claus Nielsen v Yuto Muramatsu | L | 2-3 | |
| Qatar Open - GD | 11/15 18:12 | - | Claus Nielsen v Miikka O'Connor | W | 3-0 | |
| Qatar Open - GD | 11/10 19:46 | - | Claus Nielsen v Enzo Angles | L | 0-3 | |
| Qatar Open - GD | 11/10 10:27 | - | Robin Devos v Claus Nielsen | L | 4-2 | |
| Qatar Open - GD | 11/09 12:01 | - | Claus Nielsen v Stanislav Kucera | L | 0-4 | |
| Qatar Open - GD | 11/09 09:28 | - | Claus Nielsen v Alessandro Baciocchi | W | 3-2 | |
| Qatar Open - Dames | 11/04 14:02 | - | Vladimir Samsonov v Claus Nielsen | L | 3-0 | |
| Qatar Open - Dames | 10/26 17:55 | - | Claus Nielsen v Jens Lundquist | L | 2-3 | |
| Qatar Open - Dames | 10/07 16:54 | - | Hugo Calderano v Claus Nielsen | L | 3-0 | |
| Qatar Open - GD | 09/01 11:20 | - | Hampus Soderlund v Claus Nielsen | L | 4-1 | |
| Bulgaria Open | 08/26 16:00 | 5 | Claus Nielsen v Anthony Tran | L | 2-4 | |
| Bulgaria Open | 08/26 12:55 | 6 | Aleksandar Karakasevic v Claus Nielsen | W | 3-4 |