| KNVB beker 1985/1986 - Appearances as Referee |  |
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| 12/10/1985 | SC Cambuur | - | Drechtsteden '79 | 1:2 | 2 | - | - |
| 17/03/1986 | Fortuna Sittard | - | Feyenoord | 2:1 | 1 | - | - |
| 27/05/1986 | AFC Ajax | - | RBC Roosendaal | 3:0 | - | - | - |
| KNVB beker 1985/1986 - Appearances as Referee | |
|
|
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| 12/10/1985 | SC Cambuur | - | Drechtsteden '79 | 1:2 | 2 | - | - |
| 17/03/1986 | Fortuna Sittard | - | Feyenoord | 2:1 | 1 | - | - |
| 27/05/1986 | AFC Ajax | - | RBC Roosendaal | 3:0 | - | - | - |
| Complete name: | John Blankenstein |
| Born: | 12/02/1949 † 25/08/2006 |
| Place of birth: |
Den Haag, 
Netherlands |
| Nationality: |
Netherlands |