| 16. Round | 29/11/1998 | Club Brugge KV | - | Excelsior Mouscron | 0:0 | ||||
| 18. Round | 12/12/1998 | Excelsior Mouscron | - | Sint-Truidense VV | 5:1 |  |
|||
| 19. Round | 19/12/1998 | Lommelse SK | - | Excelsior Mouscron | 2:3 |  |
|||
| 22. Round | 30/01/1999 | Excelsior Mouscron | - | Sporting Lokeren | 5:1 | ||||
| 23. Round | 12/02/1999 | Lierse SK (old) | - | Excelsior Mouscron | 1:2 | ||||
| 24. Round | 27/02/1999 | Excelsior Mouscron | - | KV Oostende | 2:1 | ||||
| 26. Round | 12/03/1999 | Excelsior Mouscron | - | KAA Gent | 7:1 | ||||
| 27. Round | 20/03/1999 | KRC Genk | - | Excelsior Mouscron | 3:0 | ||||
| 29. Round | 17/04/1999 | RSC Charleroi | - | Excelsior Mouscron | 1:3 | ||||
| 31. Round | 02/05/1999 | K.S.C. Eendracht Aalst | - | Excelsior Mouscron | 1:4 | ||||
| 32. Round | 05/05/1999 | KVC Westerlo | - | Excelsior Mouscron | 1:1 | ||||
| 33. Round | 09/05/1999 | Excelsior Mouscron | - | Club Brugge KV | 2:0 | ||||
| 34. Round | 16/05/1999 | Germinal Beerschot | - | Excelsior Mouscron | 1:1 |
Croatia