| 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 | ||||
| 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 | ||||
| 3. Round | 17/11/1998 | GKS Bełchatów | - | Stomil Olsztyn | 1:0 | ||||
| 18. Round | 13/03/1999 | Stomil Olsztyn | - | GKS Bełchatów | 0:2 | ||||
| 20. Round | 02/04/1999 | Ruch Radzionków | - | GKS Bełchatów | 1:1 | ||||
| 24. Round | 30/04/1999 | Widzew Łódź | - | GKS Bełchatów | 1:0 | ||||
| 25. Round | 07/05/1999 | Wisła Kraków | - | GKS Bełchatów | 4:0 | ||||
| 26. Round | 11/05/1999 | GKS Bełchatów | - | Ruch Chorzów | 0:2 |  |
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| 27. Round | 14/05/1999 | ŁKS Łódź | - | GKS Bełchatów | 2:0 | ||||
| 28. Round | 21/05/1999 | GKS Bełchatów | - | Górnik Zabrze | 1:1 | ||||
| 29. Round | 25/05/1999 | Pogoń Szczecin | - | GKS Bełchatów | 1:0 | |
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| 30. Round | 28/05/1999 | GKS Bełchatów | - | Odra Wodzisław | 1:1 |
Lithuania