| 1. Round | 24/07/1998 | GKS Bełchatów | - | Polonia Warszawa | 0:1 | ||||
| 2. Round | 31/07/1998 | Zagłębie Lubin | - | GKS Bełchatów | 1:2 | ||||
| 5. Round | 22/08/1998 | GKS Bełchatów | - | Ruch Radzionków | 2:1 | ||||
| 6. Round | 29/08/1998 | Amica Wronki | - | GKS Bełchatów | 2:0 | ||||
| 7. Round | 08/09/1998 | GKS Bełchatów | - | GKS Katowice | 1:2 | ||||
| 8. Round | 12/09/1998 | Legia Warszawa | - | GKS Bełchatów | 3:0 | ||||
| 9. Round | 17/09/1998 | GKS Bełchatów | - | Widzew Łódź | 3:2 | ||||
| 4. Round | 22/09/1998 | Lech Poznań | - | GKS Bełchatów | 3:0 |  |
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| 10. Round | 25/09/1998 | GKS Bełchatów | - | Wisła Kraków | 0:3 | ||||
| 11. Round | 02/10/1998 | Ruch Chorzów | - | GKS Bełchatów | 1:1 | ||||
| 12. Round | 16/10/1998 | GKS Bełchatów | - | ŁKS Łódź | 2:3 | ||||
| 13. Round | 23/10/1998 | Górnik Zabrze | - | GKS Bełchatów | 1:3 | |
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| 14. Round | 30/10/1998 | GKS Bełchatów | - | Pogoń Szczecin | 2:0 |
Poland