| Portuguese Int. MD Qual | 2021/05/07 12:30 | Buijk/Wassink v Boe/Kjaer | L | 0-2 |
| Portuguese Int. MD Qual | 2021/05/07 10:30 | Buijk/Wassink v Anjo/Rodrigues | W | 2-0 |
| Polish Open MD | 2021/03/26 19:45 | Chang/Chia v Buijk/Wassink | L | 2-0 |
| Polish Open MD | 2021/03/26 13:30 | Maciej Matusz/Melaniuk v Buijk/Wassink | W | 0-2 |
| Polish Open MD Qual | 2021/03/25 13:05 | Cimosz/Kordek v Buijk/Wassink | W | 0-2 |
| Slovenia Int. MD Qual | 2021/05/19 15:40 | Houe/Mads Juel Moller v Bailoni/Rudolf | W | 2-0 |