| 1. Round | 31/07/1998 | Fortuna Köln | - | Fortuna Düsseldorf | 2:1 | ||||
| 6. Round | 11/09/1998 | SG Wattenscheid 09 | - | Fortuna Köln | 0:0 | ||||
| 7. Round | 20/09/1998 | Fortuna Köln | - | Karlsruher SC | 0:1 | ||||
| 8. Round | 26/09/1998 | Arminia Bielefeld | - | Fortuna Köln | 2:1 | ||||
| 9. Round | 05/10/1998 | Fortuna Köln | - | 1. FC Köln | 4:2 | ||||
| 10. Round | 18/10/1998 | SpVgg Unterhaching | - | Fortuna Köln | 3:0 | ||||
| 11. Round | 26/10/1998 | Fortuna Köln | - | Hannover 96 | 3:0 |  |
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| 12. Round | 01/11/1998 | SSV Ulm 1846 | - | Fortuna Köln | 3:3 | ||||
| 13. Round | 08/11/1998 | Fortuna Köln | - | 1. FSV Mainz 05 | 2:0 | ||||
| 14. Round | 15/11/1998 | FC St. Pauli | - | Fortuna Köln | 0:0 | ||||
| 15. Round | 20/11/1998 | Fortuna Köln | - | Energie Cottbus | 3:0 | |
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| 16. Round | 29/11/1998 | Rot-Weiß Oberhausen | - | Fortuna Köln | 0:0 | ||||
| 17. Round | 04/12/1998 | Fortuna Köln | - | FC Gütersloh | 3:2 | ||||
| 18. Round | 11/12/1998 | Fortuna Düsseldorf | - | Fortuna Köln | 2:2 | ||||
| 19. Round | 20/12/1998 | Fortuna Köln | - | KFC Uerdingen 05 | 1:1 |
Germany