| 1. Round | 24/07/1998 | GKS Bełchatów | - | Polonia Warszawa | 0:1 | ||||
| 2. Round | 01/08/1998 | Polonia Warszawa | - | Wisła Kraków | 1:3 |  |
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| 5. Round | 21/08/1998 | Górnik Zabrze | - | Polonia Warszawa | 2:0 | ||||
| 9. Round | 18/09/1998 | Polonia Warszawa | - | Zagłębie Lubin | 3:1 | ||||
| 4. Round | 22/09/1998 | Polonia Warszawa | - | ŁKS Łódź | 2:1 | ||||
| 10. Round | 26/09/1998 | Stomil Olsztyn | - | Polonia Warszawa | 1:0 |
Lithuania