| Super League 1991/1992 - Appearances as Referee |  |
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| 26/10/1991 | Neuchâtel Xamax FC | - | FC Luzern | 1:1 | 4 | - | 1 |
| 03/11/1991 | FC Lugano | - | FC Aarau | 1:1 | 5 | - | - |
| 23/11/1991 | Servette FC | - | Neuchâtel Xamax FC | 1:1 | 3 | - | - |
| Super League 1991/1992 - Appearances as Referee | |
|
|
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| 26/10/1991 | Neuchâtel Xamax FC | - | FC Luzern | 1:1 | 4 | - | 1 |
| 03/11/1991 | FC Lugano | - | FC Aarau | 1:1 | 5 | - | - |
| 23/11/1991 | Servette FC | - | Neuchâtel Xamax FC | 1:1 | 3 | - | - |
| Complete name: | Michel Zen Ruffinen |
| Born: | 24/04/1959 |
| Place of birth: |
Switzerland |
| Nationality: |
Switzerland |