| Bonn Int. Qual | 2023/05/31 17:20 | James Robertson v Koppen, Dennis | W | 0-2 |
| Bonn Int. Qual | 2023/05/31 09:45 | David Silva v Koppen, Dennis | W | 0-2 |
| Luxembourg Open Qual | 2023/05/04 14:50 | Simon Baron-Vezilier v Koppen, Dennis | L | 2-0 |
| Luxembourg Open Qual | 2023/05/04 12:15 | Kian-Yu Oei v Koppen, Dennis | W | 0-2 |
| Luxembourg Open Qual | 2023/05/04 08:00 | 올슨, 루드비히 페트레 v Koppen, Dennis | W | 0-2 |
| Dutch Int. | 2023/04/14 10:20 | 코에니그, 조엘 v Koppen, Dennis | L | 2-0 |
| Dutch Int. Qual | 2023/04/13 20:00 | Ze Xi Sean Ngu v Koppen, Dennis | W | 0-2 |
| Dutch Int. Qual | 2023/04/13 14:05 | Koppen, Dennis v Zack Bobrowski | W | 2-0 |
| Dutch Open (GP) 2017, Qualification | 2023/10/11 12:35 | 루세브, 이반 v Rakesh Sharma | W | 2-0 |
| Bulgarian Int | 2023/10/06 07:15 | 홀쉬케, 브라이언 v 루세브, 이반 | L | 2-1 |
| Nouvelle Aquitane Future Series | 2023/07/07 09:20 | Romeo Makboul v 루세브, 이반 | L | 2-1 |
| Nantes Int. Qual | 2023/06/15 11:15 | 루세브, 이반 v Huang, Harry | L | 0-2 |
| Nantes Int. Qual | 2023/06/15 07:00 | Rune Van Dalm v 루세브, 이반 | W | 0-2 |
| Austrian Open Qual | 2023/05/25 08:00 | 르에라잔, 카렌 라잔 v 루세브, 이반 | L | 2-1 |
| Slovenia Open Quals | 2023/05/17 07:40 | Kuan Lin Kuo v 루세브, 이반 | L | 2-0 |
| Luxembourg Open Qual | 2023/05/04 07:20 | Ngan, Heng Lin v 루세브, 이반 | L | 2-1 |