| Bonn Int. Qual | 2023/05/31 17:20 | James Robertson v Dennis Koppen | W | 0-2 |
| Bonn Int. Qual | 2023/05/31 09:45 | David Silva v Dennis Koppen | W | 0-2 |
| Luxembourg Open Qual | 2023/05/04 14:50 | Simon Baron-Vezilier v Dennis Koppen | L | 2-0 |
| Luxembourg Open Qual | 2023/05/04 12:15 | Kian-Yu Oei v Dennis Koppen | W | 0-2 |
| Luxembourg Open Qual | 2023/05/04 08:00 | Ludvig Petre Olsson v Dennis Koppen | W | 0-2 |
| Dutch Int. | 2023/04/14 10:20 | Joel Koenig v Dennis Koppen | L | 2-0 |
| Dutch Int. Qual | 2023/04/13 20:00 | Ze Xi Sean Ngu v Dennis Koppen | W | 0-2 |
| Dutch Int. Qual | 2023/04/13 14:05 | Dennis Koppen v Zack Bobrowski | W | 2-0 |
| Dutch Open Qual | 2023/10/11 12:35 | Ivan Rusev v Rakesh Sharma | W | 2-0 |
| Bulgarian Int | 2023/10/06 07:15 | Brian Holtschke v Ivan Rusev | L | 2-1 |
| Nouvelle Aquitane Future Series | 2023/07/07 09:20 | Romeo Makboul v Ivan Rusev | L | 2-1 |
| Nantes Int. Qual | 2023/06/15 11:15 | Ivan Rusev v Harry Huang | L | 0-2 |
| Nantes Int. Qual | 2023/06/15 07:00 | Rune Van Dalm v Ivan Rusev | W | 0-2 |
| Austrian Open Qual | 2023/05/25 08:00 | Karan Rajan Rajarajan v Ivan Rusev | L | 2-1 |
| Slovenia Open Quals | 2023/05/17 07:40 | Kuan Lin Kuo v Ivan Rusev | L | 2-0 |
| Luxembourg Open Qual | 2023/05/04 07:20 | Heng Lin Ngan v Ivan Rusev | L | 2-1 |