| Olympic Games 1984 - Appearances as Assistant | ||||
| 31/07/1984 | Chile | - | Qatar | 1:0 |
| 05/08/1984 | France | - | Egypt | 2:0 |
| Olympic Games 1984 - Appearances as Assistant | ||||
| 31/07/1984 | Chile | - | Qatar | 1:0 |
| 05/08/1984 | France | - | Egypt | 2:0 |
| Complete name: | Johannes Nicolaus Ignacius Keizer |
| Born: | 06/10/1940 |
| Place of birth: |
Volendam, 
Netherlands |
| Nationality: |
Netherlands |