| Croatian Int. | 2025/09/27 15:00 | Orijit Chaliha v Leon Seiwald | L | 2-0 |
| Croatian Int. | 2025/09/27 09:05 | Dominik Kopriva v Leon Seiwald | W | 1-2 |
| Croatian Int. | 2025/09/26 08:30 | Mark Korosa v Leon Seiwald | W | 0-2 |
| Slovenia Future Series Qual | 2025/09/03 08:20 | Arthur Chardain v Leon Seiwald | L | 2-0 |
| Czech Int. | 2025/06/21 07:00 | Leon Seiwald v Mikkel Langemark | L | 0-2 |
| Czech Int. | 2025/06/20 07:00 | Leon Seiwald v Michael Tomic | W | 2-0 |
| Latvia Int. Qual | 2025/06/12 09:50 | Ming Wei Tai v Leon Seiwald | W | 0-2 |
| Austrian Open Qual | 2025/05/22 09:05 | Leon Seiwald v Luis Pongratz | L | 1-2 |
| Italian Open Quals | 2025/06/26 13:50 | Mathias Solgaard v Christopher Vittoriani | L | 0-2 |
| Italian Open Quals | 2025/06/26 12:15 | Emil Johansson v Mathias Solgaard | W | 0-2 |
| Italian Open Quals | 2025/06/25 13:20 | Loris Dietrich v Mathias Solgaard | W | 1-2 |
| Czech Int. | 2025/06/21 10:30 | William Bogebjerg v Mathias Solgaard | L | 2-0 |
| Czech Int. | 2025/06/21 07:00 | Mathias Solgaard v Sanjeevi Padmanabhan Vasudevan | W | 2-1 |
| Czech Int. | 2025/06/20 10:40 | Mathias Solgaard v Patrick Zbinden | W | 2-1 |
| Austrian Open Qual | 2025/05/22 08:50 | Mathias Solgaard v Tae Ern Ong | L | 0-2 |
| Denmark Challenge Qual | 2025/05/08 13:30 | Riki Takei v Mathias Solgaard | L | 2-0 |