| Hungarian Int. - HD | 11/04 12:20 | - | Sondergaard/Thogersen v Koppen/Stoffelen | L | 2-0 | |
| Hungarian Int. - HD | 11/03 18:40 | - | Koppen/Stoffelen v Papai/Papai | W | 2-0 | |
| Dutch Open - HD | 10/13 15:35 | - | Kjaer/Sogaard v Koppen/Stoffelen | L | 2-0 | |
| Spanish Int. - HD | 09/14 14:00 | - | Koppen/Stoffelen v Olivares/Perez | L | 0-2 | |
| Spanish Int. - HD | 09/14 11:30 | - | Koppen/Stoffelen v Barbieri/Peillet | W | 2-0 | |
| Bonn Int. - HD | 06/17 11:00 | - | Chiu/Yang v Koppen/Stoffelen | L | 2-0 | |
| Bonn Int. - HD | 06/16 19:35 | - | Rodrigo Almeida/Tremoceiro v Koppen/Stoffelen | W | 0-2 | |
| Lithuanian Int. - HD | 06/10 14:35 | - | Abela/Cassar v Koppen/Stoffelen | W | 1-2 | |
| Luxembourg Open - HD | 05/06 13:40 | - | Gupta/Yap v Koppen/Stoffelen | L | 2-0 | |
| Dutch Int. - HD | 04/14 09:40 | - | Koppen/Stoffelen v Kjaer/Sogaard | L | 0-2 | |
| Slovak Open | 03/03 20:00 | - | Koppen/Stoffelen v Boon/Wong | L | 0-2 | |
| Swedish Open - HD | 01/21 17:25 | - | Koppen/Stoffelen v Corvee/Gaudin | L | 0-2 | |
| Italian Int. - HD | 12/18 09:00 | - | Boe/Faust Kjaer v Koppen/Stoffelen | L | 2-1 | |
| Italian Int. - HD | 12/17 15:20 | - | Koppen/Stoffelen v Dietrich/Zarrouk | W | 2-0 | |
| Slovenië - Future Series - HD | 11/26 17:25 | - | Koppen/Stoffelen v Haase/Vlaar | L | 0-2 | |
| Slovenië - Future Series - HD - Kwal. | 11/25 17:45 | - | Barth/Danila Gataullin v Koppen/Stoffelen | W | 1-2 | |
| Slovenië - Future Series - HD - Kwal. | 11/25 11:20 | 4 | Alic/Poboljsaj v Koppen/Stoffelen | W | 0-2 | |
| Bulgarian Int. - HD - Kwal. | 10/07 14:30 | - | Koppen/Stoffelen v Østhassel/Xu | W | 2-0 |