| Euro Mixed Team Champs | 2020/12/10 17:30 | Ludik, Milan v Leon Seiwald | W | 0-2 |
| SaarLorLux Open 2019, MS | 2020/10/27 09:00 | Leon Seiwald v Kim Bruun | L | 0-2 |
| Open de Slovaquie | 2020/02/27 15:30 | Jan Louda v Leon Seiwald | L | 2-0 |
| Austrian Open - Qualif. | 2020/02/19 12:15 | Leon Seiwald v Yadav Chittaboina, Rahul | L | 1-2 |
| Championnats d'Europe par équipe | 2020/02/13 18:00 | Leon Seiwald v Magee, Joshua | W | 2-1 |
| Championnats d'Europe par équipe | 2020/02/12 19:00 | Leon Seiwald v Dubowski, Mateusz | W | 2-1 |
| Scottish Open Qual | 2019/11/21 12:40 | Christo Popov v Leon Seiwald | L | 2-0 |
| Scottish Open Qual | 2019/11/21 10:00 | Leon Seiwald v Parsons, Sam | W | 2-1 |
| International du Portugal Qualif. | 2024/03/07 15:20 | James Robertson v Ethan Rose | L | 0-2 |
| Welsh Int. Qual | 2023/11/28 17:10 | Yanis Gaudin v James Robertson | L | 2-0 |
| Welsh Int. Qual | 2023/11/28 09:20 | Harry Jones v James Robertson | W | 0-2 |
| Irish Open Qual | 2023/11/15 10:10 | James Robertson v Finn Achthoven | L | 0-2 |
| Hungarian Int. Qual | 2023/11/01 15:20 | James Robertson v Alexander Ringbaek | L | 0-2 |
| Hungarian Int. Qual | 2023/11/01 10:20 | Kristof Toth v James Robertson | W | 1-2 |
| Scottish Open | 2023/10/06 09:20 | Collins Valentine Filimon v James Robertson | L | 2-1 |
| Belgian Int. Qual | 2023/09/13 13:00 | James Robertson v Yanis Gaudin | L | 0-2 |