| 9. Round | 04/10/1998 | FC Gütersloh | - | 1. FSV Mainz 05 | 6:1 | ||||
| 10. Round | 18/10/1998 | 1. FSV Mainz 05 | - | FC St. Pauli | 3:0 |  |
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| 11. Round | 23/10/1998 | Energie Cottbus | - | 1. FSV Mainz 05 | 2:2 | ||||
| 12. Round | 30/10/1998 | 1. FSV Mainz 05 | - | Rot-Weiß Oberhausen | 0:0 | ||||
| 13. Round | 08/11/1998 | Fortuna Köln | - | 1. FSV Mainz 05 | 2:0 | ||||
| 15. Round | 20/11/1998 | KFC Uerdingen 05 | - | 1. FSV Mainz 05 | 1:2 | ||||
| 16. Round | 02/12/1998 | 1. FSV Mainz 05 | - | Stuttgarter Kickers | 2:2 | ||||
| 17. Round | 06/12/1998 | TeBe Berlin | - | 1. FSV Mainz 05 | 3:0 |
Turkey
Andorra