| Champions League 1993/1994 - Appearances as Referee |  |
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| 29/09/1993 | AEK Athen | - | AS Monaco | 1:1 | 3 | - | - |
| 07/12/1993 | Spartak Moskva | - | Galatasaray | 0:0 | - | - | 2 |
| Champions League 1993/1994 - Appearances as Referee | |
|
|
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| 29/09/1993 | AEK Athen | - | AS Monaco | 1:1 | 3 | - | - |
| 07/12/1993 | Spartak Moskva | - | Galatasaray | 0:0 | - | - | 2 |
| Complete name: | John Blankenstein |
| Born: | 12/02/1949 † 25/08/2006 |
| Place of birth: |
Den Haag, 
Netherlands |
| Nationality: |
Netherlands |