| European Team Championships MD | 2021/02/16 16:40 | Kolding/Rasmussen v Monnberg A / Paul J | W | 2-0 |
| European Team Championships MD | 2021/02/16 17:00 | Grimley/Hall v Lamsfuss/Seidel | W | 0-2 |
| Thailand Open MD | 2021/01/22 05:00 | Lee / Wang v Lamsfuss/Seidel | L | 2-0 |
| Thailand Open MD | 2021/01/21 08:30 | Fikri/Maulana v Lamsfuss/Seidel | W | 0-2 |
| Thailand Open MD | 2021/01/20 07:25 | Lamsfuss/Seidel v Gaterahong/Tulamok | W | 2-0 |
| Thailand Open MD | 2021/01/13 05:00 | Jomkoh/Kedren v Lamsfuss/Seidel | L | 2-0 |
| SaarLorLux Open 2019, MD | 2020/10/27 18:00 | van Der Lecq T / Jille D v Lamsfuss/Seidel | L | 2-1 |
| Denmark Open MD | 2020/10/15 12:05 | Lane/Vendy v Lamsfuss/Seidel | L | 2-0 |
| Denmark Open MD | 2020/10/14 07:00 | Christiansen/Nohr v Lamsfuss/Seidel | W | 1-2 |