| Europa League 1971/1972 - Appearances as Referee |  |
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| 29/09/1971 | FC Nantes | - | FC Porto | 1:1 | 4 | - | - |
| 03/11/1971 | Rapid Wien | - | Dinamo Zagreb | 0:0 | 2 | - | - |
| Europa League 1971/1972 - Appearances as Referee | |
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| 29/09/1971 | FC Nantes | - | FC Porto | 1:1 | 4 | - | - |
| 03/11/1971 | Rapid Wien | - | Dinamo Zagreb | 0:0 | 2 | - | - |
| Complete name: | Ivan Pláček |
| Born: | |
| Place of birth: |
Slovakia |
| Residence: | Zilina / Bytca |
| Nationality: |
Czech Republic |