| Europa League 1967/1968 - Appearances as Referee |  |
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| 13/09/1967 | Wiener Sport-Club | - | Atlético Madrid | 2:5 | - | - | - |
| Europa League 1967/1968 - Appearances as Referee | |
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| 13/09/1967 | Wiener Sport-Club | - | Atlético Madrid | 2:5 | - | - | - |
| Complete name: | Mario Clematide |
| Born: | |
| Place of birth: |
Switzerland |
| Residence: | Zollikofen |
| Nationality: |
Switzerland |