Johan Postma
| Date | Contest | Band | Position | Draw |
|---|---|---|---|---|
| 25 Oct 2019 |
Dutch Nationals (Fourth Division)
|
UDI
|
7 | 3 |
| 26 Oct 2018 |
Dutch Nationals (Fourth Division)
|
Brassband UDI Oosternijkerk
|
6 |