| EURO Qualifiers 1986/1987 - Appearances as Referee |  |
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| 11/11/1986 | Spain | - | Romania | 1:0 | 2 | - | - |
| 14/10/1987 | Ireland | - | Bulgaria | 2:0 | 2 | - | 1 |
| 04/12/1987 | Italy | - | Portugal | 3:0 | 2 | - | - |
| EURO Qualifiers 1986/1987 - Appearances as Referee | |
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|
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| 11/11/1986 | Spain | - | Romania | 1:0 | 2 | - | - |
| 14/10/1987 | Ireland | - | Bulgaria | 2:0 | 2 | - | 1 |
| 04/12/1987 | Italy | - | Portugal | 3:0 | 2 | - | - |
| Complete name: | Johannes Nicolaus Ignacius Keizer |
| Born: | 06/10/1940 † 18/11/2024 |
| Place of birth: |
Volendam, 
Netherlands |
| Nationality: |
Netherlands |