| 1. Jornada | 18.07.1998 | Basilea | - | FC Sion | 0:0 | ||||
| 2. Jornada | 21.07.1998 | FC Sion | - | Neuchâtel Xamax FC | 1:1 |  |
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| 3. Jornada | 25.07.1998 | FC St. Gallen | - | FC Sion | 2:0 | ||||
| 4. Jornada | 02.08.1998 | FC Sion | - | Grasshopper Club Zürich | 0:1 | ||||
| 5. Jornada | 08.08.1998 | Lausanne Sports | - | FC Sion | 2:1 | ||||
| 6. Jornada | 15.08.1998 | FC Sion | - | BSC Young Boys | 1:1 |  |
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| 7. Jornada | 22.08.1998 | FC Lugano | - | FC Sion | 2:2 | ||||
| 8. Jornada | 28.08.1998 | FC Luzern | - | FC Sion | 1:2 | ||||
| 9. Jornada | 08.09.1998 | FC Sion | - | FC Aarau | 3:2 | ||||
| 10. Jornada | 11.09.1998 | FC Zürich | - | FC Sion | 3:0 | ||||
| 11. Jornada | 19.09.1998 | FC Sion | - | Servette FC | 2:2 | ||||
| 14. Jornada | 18.10.1998 | FC Sion | - | FC St. Gallen | 2:1 | |
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| 15. Jornada | 27.10.1998 | Grasshopper Club Zürich | - | FC Sion | 4:1 | ||||
| 16. Jornada | 31.10.1998 | FC Sion | - | Lausanne Sports | 0:4 | ||||
| 17. Jornada | 08.11.1998 | BSC Young Boys | - | FC Sion | 3:0 | |
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| 19. Jornada | 22.11.1998 | FC Sion | - | FC Luzern | 0:0 | ||||
| 20. Jornada | 29.11.1998 | FC Aarau | - | FC Sion | 2:2 | ||||
| 21. Jornada | 04.12.1998 | FC Sion | - | FC Zürich | 0:0 | |
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| 22. Jornada | 13.12.1998 | Servette FC | - | FC Sion | 2:1 |
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