| 27. Round | 15/03/1991 | KV Mechelen | - | Cercle Brugge | 3:2 | ||||
| 28. Round | 29/03/1991 | Royal Antwerp FC | - | KV Mechelen | 0:0 | ||||
| 29. Round | 05/04/1991 | KV Mechelen | - | Sint-Truidense VV | 4:0 | ||||
| 24. Round | 12/04/1991 | KV Mechelen | - | RWD Molenbeek | 4:0 |  |
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| 30. Round | 20/04/1991 | RFC Liège | - | KV Mechelen | 0:2 | ||||
| 31. Round | 03/05/1991 | KV Mechelen | - | KAA Gent | 1:0 | ||||
| 32. Round | 11/05/1991 | KV Kortrijk | - | KV Mechelen | 0:4 | ||||
| 33. Round | 18/05/1991 | KV Mechelen | - | RSC Anderlecht | 1:1 | ||||
| 34. Round | 25/05/1991 | KFC Germinal Ekeren | - | KV Mechelen | 0:0 |
Netherlands