| Europa League 1990/1991 - Appearances as Referee |  |
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| 27/11/1990 | AS Roma | - | Girondins Bordeaux | 5:0 | - | - | - |
| 19/03/1991 | Torpedo Moskva | - | Brøndby IF | 2:4 pso | - | - | - |
| Europa League 1990/1991 - Appearances as Referee | |
|
|
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| 27/11/1990 | AS Roma | - | Girondins Bordeaux | 5:0 | - | - | - |
| 19/03/1991 | Torpedo Moskva | - | Brøndby IF | 2:4 pso | - | - | - |
| Complete name: | John Blankenstein |
| Born: | 12/02/1949 † 25/08/2006 |
| Place of birth: |
Den Haag, 
Netherlands |
| Nationality: |
Netherlands |