| 18. Round | 06/03/1998 | Ruch Chorzów | - | Stomil Olsztyn | 2:1 | ||||
| 19. Round | 14/03/1998 | Polonia Warszawa | - | Stomil Olsztyn | 2:1 | ||||
| 20. Round | 20/03/1998 | Groclin Dyskobolia | - | Stomil Olsztyn | 0:1 | ||||
| 21. Round | 27/03/1998 | Stomil Olsztyn | - | Pogoń Szczecin | 2:1 | ||||
| 22. Round | 03/04/1998 | Widzew Łódź | - | Stomil Olsztyn | 0:0 |  |
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| 23. Round | 07/04/1998 | Petrochemia Plock | - | Stomil Olsztyn | 2:1 | ||||
| 24. Round | 10/04/1998 | Stomil Olsztyn | - | Amica Wronki | 0:1 | ||||
| 25. Round | 17/04/1998 | GKS Katowice | - | Stomil Olsztyn | 0:1 | ||||
| 26. Round | 24/04/1998 | Stomil Olsztyn | - | Legia Warszawa | 1:1 | ||||
| 27. Round | 01/05/1998 | ŁKS Łódź | - | Stomil Olsztyn | 3:1 | ||||
| 28. Round | 08/05/1998 | Stomil Olsztyn | - | KSZO Ostrowiec | 2:0 | ||||
| 29. Round | 15/05/1998 | Lech Poznań | - | Stomil Olsztyn | 1:1 | ||||
| 30. Round | 19/05/1998 | Stomil Olsztyn | - | Zagłębie Lubin | 0:0 | ||||
| 31. Round | 29/05/1998 | Górnik Zabrze | - | Stomil Olsztyn | 2:3 | ||||
| 32. Round | 02/06/1998 | Stomil Olsztyn | - | Wisła Kraków | 0:3 | ||||
| 33. Round | 05/06/1998 | Odra Wodzisław | - | Stomil Olsztyn | 4:0 | ||||
| 34. Round | 08/06/1998 | Stomil Olsztyn | - | Raków Częstochowa | 3:1 |
Poland