| 5. Round | 11/08/1990 | Grasshopper Club Zürich | - | FC St. Gallen | 2:0 | ||||
| 6. Round | 18/08/1990 | FC St. Gallen | - | FC Aarau | 2:1 | ||||
| 7. Round | 25/08/1990 | FC Luzern | - | FC St. Gallen | 3:1 | ||||
| 8. Round | 01/09/1990 | FC St. Gallen | - | FC Wettingen | 2:0 | ||||
| 9. Round | 05/09/1990 | BSC Young Boys | - | FC St. Gallen | 0:0 | ||||
| 10. Round | 15/09/1990 | FC St. Gallen | - | Servette FC | 1:4 |  |
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| 11. Round | 22/09/1990 | FC Zürich | - | FC St. Gallen | 1:1 | ||||
| 12. Round | 06/10/1990 | FC St. Gallen | - | FC Lugano | 3:0 | ||||
| 13. Round | 10/10/1990 | Neuchâtel Xamax FC | - | FC St. Gallen | 1:0 | ||||
| 14. Round | 20/10/1990 | FC St. Gallen | - | FC Sion | 2:1 | ||||
| 15. Round | 27/10/1990 | Lausanne Sports | - | FC St. Gallen | 3:1 | ||||
| 16. Round | 04/11/1990 | FC St. Gallen | - | Grasshopper Club Zürich | 0:3 | ||||
| 17. Round | 10/11/1990 | FC Aarau | - | FC St. Gallen | 1:1 |  |
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| 18. Round | 18/11/1990 | FC St. Gallen | - | FC Luzern | 0:1 | ||||
| 19. Round | 25/11/1990 | FC Wettingen | - | FC St. Gallen | 1:3 | ||||
| 20. Round | 02/12/1990 | FC St. Gallen | - | BSC Young Boys | 1:1 | ||||
| 21. Round | 09/12/1990 | Servette FC | - | FC St. Gallen | 0:2 | |
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| 22. Round | 16/12/1990 | FC St. Gallen | - | FC Zürich | 3:0 | |
Chile