| KNVB beker 1989/1990 - Appearances as Referee |  |
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| 01/09/1989 | SV Babberich | - | MVV | 1:2 | 1 | - | - |
| 02/09/1989 | AGOVV | - | PEC Zwolle '82 | 3:5 | - | - | - |
| KNVB beker 1989/1990 - Appearances as Referee | |
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| 01/09/1989 | SV Babberich | - | MVV | 1:2 | 1 | - | - |
| 02/09/1989 | AGOVV | - | PEC Zwolle '82 | 3:5 | - | - | - |
| Complete name: | Jan Dolstra |
| Born: | 11/01/1952 |
| Place of birth: |
Nijehaske, 
Netherlands |
| Nationality: |
Netherlands |