| Swiss Open WD Qual | 2018/05/10 08:00 | Leon Seiwald v Sebastian Bugtrup | L | 1-2 |
| Swiss Open WD Qual | 2018/03/08 11:30 | Marcus Loo v Leon Seiwald | W | 1-2 |
| Swiss Open WD Qual | 2018/02/21 10:40 | David Peng v Leon Seiwald | L | 2-1 |
| Swiss Open WD Qual | 2017/12/05 14:26 | Leon Seiwald v Peter Correl | L | 1-2 |
| Indonesia Masters XD | 2017/05/22 02:20 | Zin Rei Ryan Ng v Leon Seiwald | L | 2-1 |
| Giraldilla Int. XD | 2017/03/09 21:47 | Douglas Lidman v Leon Seiwald | L | 2-0 |
| Dutch Open | 2017/10/11 12:20 | Jaromir Janacek v Marius Myhre | L | 0-2 |
| Giraldilla Int. XD | 2017/03/23 09:00 | Jaromir Janacek v Mateusz Swierczynski | L | 1-2 |
| Giraldilla Int. XD | 2016/12/13 13:44 | Wisnu Haryo Putro v Jaromir Janacek | L | 2-0 |
| Indonesia Masters XD | 2016/11/23 10:45 | Songjian Wu v Jaromir Janacek | L | 2-0 |
| Giraldilla Int. XD | 2016/09/28 11:46 | Jaromir Janacek v Joel Koenig | W | 2-1 |