| Super League 1976/1977 Abstiegsrunde - Appearances as Referee |  |
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| 18/06/1977 | AC Bellinzona | - | Lausanne Sports | 0:0 | 1 | - | - |
| Super League 1976/1977 Abstiegsrunde - Appearances as Referee | |
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| 18/06/1977 | AC Bellinzona | - | Lausanne Sports | 0:0 | 1 | - | - |
| Complete name: | Otto Isler |
| Born: | |
| Place of birth: |
Switzerland |
| Nationality: |
Switzerland |