| KNVB beker 1969/1970 - Appearances as Referee |  |
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 |
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| 19/10/1969 | WVV Wageningen | - | NAC Breda | 2:4 | - | - | - |
| 12/04/1970 | De Graafschap | - | USV Elinkwijk | 1:2 | - | - | - |
| KNVB beker 1969/1970 - Appearances as Referee | |
|
|
||||
| 19/10/1969 | WVV Wageningen | - | NAC Breda | 2:4 | - | - | - |
| 12/04/1970 | De Graafschap | - | USV Elinkwijk | 1:2 | - | - | - |
| Complete name: | Siem Wellinga |
| Born: | 09/03/1931 |
| Place of birth: |
Netherlands |
| Residence: | Boekelo |
| Nationality: |
Netherlands |