| Europa League 1998/1999 - Appearances as Referee |  |
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| 29/09/1998 | Real Sociedad | - | AC Sparta Praha | 1:0 | - | - | - |
| 02/11/1998 | ACF Fiorentina | - | Grasshopper Club Zürich | 0:3 dec. | - | - | - |
| Europa League 1998/1999 - Appearances as Referee | |
|
|
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| 29/09/1998 | Real Sociedad | - | AC Sparta Praha | 1:0 | - | - | - |
| 02/11/1998 | ACF Fiorentina | - | Grasshopper Club Zürich | 0:3 dec. | - | - | - |
| Complete name: | Michel Piraux |
| Born: | 15/10/1955 |
| Place of birth: |
Belgium |
| Nationality: |
Belgium |