| Super League 1990/1991 Championship - Appearances as Referee |  |
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 |
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| 31/05/1991 | BSC Young Boys | - | FC Luzern | 1:5 | - | - | - |
| Super League 1990/1991 Championship - Appearances as Referee | |
|
|
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| 31/05/1991 | BSC Young Boys | - | FC Luzern | 1:5 | - | - | - |
| Complete name: | Michel Zen Ruffinen |
| Born: | 24/04/1959 |
| Place of birth: |
Switzerland |
| Nationality: |
Switzerland |