| Dutch International - Calificari | 2023/04/13 08:20 | Keith Mark Edison v Dennis Koppen | W | 0-2 |
| Slovenia Future Series | 2022/11/25 15:20 | Mateusz Danielak v Dennis Koppen | L | 2-1 |
| Hungarian Int. - Calificari | 2022/11/02 12:00 | Cholan Kayan v Dennis Koppen | L | 2-0 |
| Dutch Open | 2022/10/13 08:35 | Felix Burestedt v Dennis Koppen | L | 2-0 |
| Dutch Open - Calificari | 2022/10/12 08:45 | Dennis Koppen v Aaron Sonnenschein | W | 2-1 |
| Spanish Int. | 2022/09/13 13:40 | Dennis Koppen v Sacha Leveque | L | 0-2 |
| Bonn Int. - Calificari | 2022/06/15 14:10 | Syabda Perkasa Belawa v Dennis Koppen | L | 2-0 |
| Bonn Int. - Calificari | 2022/06/15 09:30 | Dennis Koppen v David Silva | W | 2-0 |
| Dutch International - Calificari | 2023/04/13 09:25 | Zack Bobrowski v Jerome Pauquet | W | 2-0 |
| Welsh International - Calificari | 2022/11/29 10:00 | Wolfgang Gnedt v Zack Bobrowski | L | 2-0 |
| Irish Open - Calificari | 2022/11/16 11:40 | Zack Bobrowski v Jakob Houe | L | 0-2 |
| Dutch International - Calificari | 2022/04/13 07:00 | Yohan Barbieri v Zack Bobrowski | L | 2-0 |
| Portugal Int. - Calificari | 2022/03/10 11:30 | Zack Bobrowski v Jayant Rana | L | 0-2 |
| Slovak Open - Calificari | 2022/03/02 12:40 | Natan Maksimovic v Zack Bobrowski | W | 0-2 |
| Estonian Int. - Calificari | 2022/01/13 14:10 | Zack Bobrowski v Ming Kang Tan | L | 0-2 |
| Estonian Int. - Calificari | 2022/01/13 09:00 | Zack Bobrowski v Andrei Schmidt | W | 2-0 |