| Champions League 1986/1987 - Appearances as Referee |  |
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| 08/04/1987 | FC Porto | - | Dinamo Kiev | 2:1 | - | - | 1 |
| Champions League 1986/1987 - Appearances as Referee | |
|
|
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| 08/04/1987 | FC Porto | - | Dinamo Kiev | 2:1 | - | - | 1 |
| Complete name: | Johannes Nicolaus Ignacius Keizer |
| Born: | 06/10/1940 |
| Place of birth: |
Volendam, 
Netherlands |
| Nationality: |
Netherlands |