18. Round | 30/01/1999 | Gaziantepspor | - | Trabzonspor | 1:1 | ||||
19. Round | 06/02/1999 | Sakaryaspor | - | Gaziantepspor | 6:2 | ||||
20. Round | 12/02/1999 | Gaziantepspor | - | Beşiktaş | 2:0 | ||||
21. Round | 20/02/1999 | MKE Ankaragücü | - | Gaziantepspor | 1:1 | ||||
22. Round | 27/02/1999 | Gaziantepspor | - | Antalyaspor | 1:1 | ||||
23. Round | 05/03/1999 | Dardanelspor | - | Gaziantepspor | 0:1 | ||||
24. Round | 13/03/1999 | Altay Izmir | - | Gaziantepspor | 0:0 | ||||
25. Round | 19/03/1999 | Gaziantepspor | - | Bursaspor | 5:2 | ||||
26. Round | 03/04/1999 | Kocaelispor | - | Gaziantepspor | 1:1 | ||||
27. Round | 10/04/1999 | Gaziantepspor | - | İstanbulspor AŞ | 2:1 | ||||
28. Round | 16/04/1999 | Erzurumspor (1968-2015) | - | Gaziantepspor | 2:1 | ||||
29. Round | 23/04/1999 | Gaziantepspor | - | Fenerbahçe | 2:2 | ||||
31. Round | 09/05/1999 | Gaziantepspor | - | Adanaspor | 3:1 | ||||
32. Round | 15/05/1999 | Samsunspor | - | Gaziantepspor | 2:1 | ||||
33. Round | 21/05/1999 | Gaziantepspor | - | Karabükspor | 4:2 | ||||
34. Round | 30/05/1999 | Galatasaray | - | Gaziantepspor | 0:0 |