| KNVB beker 1976/1977 - Appearances as Referee |  |
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| 10/10/1976 | SBV Excelsior | - | SC Amersfoort | 3:0 aet | 1 | - | - |
| 20/11/1976 | Telstar | - | ACV Vitesse | 3:1 | - | - | - |
| KNVB beker 1976/1977 - Appearances as Referee | |
|
|
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| 10/10/1976 | SBV Excelsior | - | SC Amersfoort | 3:0 aet | 1 | - | - |
| 20/11/1976 | Telstar | - | ACV Vitesse | 3:1 | - | - | - |
| Complete name: | Gerard Jonker |
| Born: | |
| Place of birth: |
Netherlands |
| Nationality: |
Netherlands |