| Europa League 1970/1971 - Appearances as Referee |  |
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| 14/04/1971 | Liverpool FC | - | Leeds United | 0:1 | - | - | - |
| Europa League 1970/1971 - Appearances as Referee | |
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| 14/04/1971 | Liverpool FC | - | Leeds United | 0:1 | - | - | - |
| Complete name: | Joseph Franciscus Dorpmans |
| Born: | 06/07/1925 |
| Place of birth: |
Netherlands |
| Nationality: |
Netherlands |