| KNVB beker 1965/1966 - Appearances as Referee |  |
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 |
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| 19/09/1965 | Racing Club Heemstede | - | Telstar | 0:3 | - | - | - |
| 07/11/1965 | Fortuna Vlaardingen | - | DHC Delft | 2:3 | - | - | - |
| KNVB beker 1965/1966 - Appearances as Referee | |
|
|
||||
| 19/09/1965 | Racing Club Heemstede | - | Telstar | 0:3 | - | - | - |
| 07/11/1965 | Fortuna Vlaardingen | - | DHC Delft | 2:3 | - | - | - |
| Complete name: | Joop Bentvelzen |
| Born: | 06/12/1930 † 18/07/2006 |
| Place of birth: |
Stompwijk, 
Netherlands |
| Residence: | Leidschendam |
| Nationality: |
Netherlands |