| KNVB beker 1970/1971 - Appearances as Referee |  |
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| 16/08/1970 | De Volewijckers | - | ADO | 1:3 | - | - | - |
| 14/03/1971 | GVAV Groningen | - | Holland Sport | 2:1 | - | - | - |
| 07/04/1971 | Racing Club Heemstede | - | RC&FC Sparta | 1:4 | - | - | - |
| KNVB beker 1970/1971 - Appearances as Referee | |
|
|
||||
| 16/08/1970 | De Volewijckers | - | ADO | 1:3 | - | - | - |
| 14/03/1971 | GVAV Groningen | - | Holland Sport | 2:1 | - | - | - |
| 07/04/1971 | Racing Club Heemstede | - | RC&FC Sparta | 1:4 | - | - | - |
| Complete name: | Joseph Franciscus Dorpmans |
| Born: | 06/07/1925 |
| Place of birth: |
Netherlands |
| Nationality: |
Netherlands |