| Internazionali d'Olanda - Qual. | 03/14 09:00 | - | Heng Lin Ngan v Dennis Koppen | - | View | |
| Internazionali di Spagna | 11/14 16:20 | - | Jakob Houe v Dennis Koppen | L | 2-1 | |
| Open della Repubblica Ceca | 10/20 08:20 | - | Wolfgang Gnedt v Dennis Koppen | L | 2-0 | |
| Open d'Olanda | 10/13 14:25 | - | Dennis Koppen v Ade Resky Dwicahyo | L | 0-2 | |
| Open d'Olanda | 10/12 13:55 | - | Dennis Koppen v Sanjeevi Vasudevan | W | 2-1 | |
| Open d'Olanda - Qual. | 10/11 17:50 | - | Dennis Koppen v Karl Sufryd | W | 2-0 | |
| Open d'Olanda - Qual. | 10/11 14:00 | - | Dennis Koppen v Ivan Rusev | W | 2-1 | |
| Open d'Olanda - Qual. | 10/11 12:20 | - | Dennis Koppen v Ethan Rose | - | Walkover | |
| Internazionali di Bonn - Qual. | 06/01 07:00 | - | David Kim v Dennis Koppen | - | View | |
| Internazionali di Bonn - Qual. | 05/31 17:20 | - | James Robertson v Dennis Koppen | W | 0-2 | |
| Internazionali di Bonn - Qual. | 05/31 09:45 | - | David Silva v Dennis Koppen | W | 0-2 | |
| Open di Lussemburgo - Qual. | 05/04 14:50 | - | Simon Baron-Vezilier v Dennis Koppen | L | 2-0 |