| KNVB beker 1964/1965 - Appearances as Referee |  |
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| 04/10/1964 | DHC Delft | - | Hermes/DVS | 2:1 | - | - | - |
| 28/02/1965 | WVV Wageningen | - | Enschedese Boys | 1:2 aet | - | - | - |
| KNVB beker 1964/1965 - Appearances as Referee | |
|
|
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| 04/10/1964 | DHC Delft | - | Hermes/DVS | 2:1 | - | - | - |
| 28/02/1965 | WVV Wageningen | - | Enschedese Boys | 1:2 aet | - | - | - |
| Complete name: | Gerard Klaassens |
| Born: | 07/02/1931 |
| Place of birth: |
Netherlands |
| Residence: | Venlo |
| Nationality: |
Netherlands |