| Champions League 1997/1998 - Appearances as Referee |  |
 |
 |
||||
| 30/09/1997 | Parma AC | - | Galatasaray | 2:0 | 1 | - | - |
| 21/10/1997 | Manchester United | - | Feyenoord | 2:1 | 2 | - | - |
| Champions League 1997/1998 - Appearances as Referee | |
|
|
||||
| 30/09/1997 | Parma AC | - | Galatasaray | 2:0 | 1 | - | - |
| 21/10/1997 | Manchester United | - | Feyenoord | 2:1 | 2 | - | - |
| Complete name: | Serge Muhmenthaler |
| Born: | 20/05/1953 |
| Place of birth: |
Grenchen, 
Switzerland |
| Nationality: |
Switzerland |
| Bundesliga (GER) appearances: | 4 |