9. Round | 23/10/1998 | Antalyaspor | - | İstanbulspor AŞ | 2:3 | ||||
10. Round | 30/10/1998 | İstanbulspor AŞ | - | Gaziantepspor | 0:0 | ||||
12. Round | 14/11/1998 | İstanbulspor AŞ | - | Bursaspor | 2:3 | ||||
15. Round | 04/12/1998 | Erzurumspor (1968-2015) | - | İstanbulspor AŞ | 2:4 |