| Supercup 1994 - Appearances as Referee |  |
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| 20/08/1994 | AFC Ajax | - | Feyenoord | 3:0 | 5 | - | - |
| Supercup 1994 - Appearances as Referee | |
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| 20/08/1994 | AFC Ajax | - | Feyenoord | 3:0 | 5 | - | - |
| Complete name: | John Blankenstein |
| Born: | 12/02/1949 † 25/08/2006 |
| Place of birth: |
Den Haag, 
Netherlands |
| Nationality: |
Netherlands |