| 3. Round | 12/09/1999 | Bursaspor | - | Gaziantepspor | 0:1 | ||||
| 4. Round | 19/09/1999 | Gaziantepspor | - | Göztepe | 2:1 | ||||
| 5. Round | 26/09/1999 | Fenerbahçe | - | Gaziantepspor | 0:0 | ||||
| 6. Round | 17/10/1999 | Gaziantepspor | - | Erzurumspor (1968-2015) | 6:0 | ||||
| 7. Round | 24/10/1999 | Gençlerbirliği | - | Gaziantepspor | 0:1 | ||||
| 11. Round | 05/12/1999 | Gaziantepspor | - | Kocaelispor | 1:0 | ||||
| 13. Round | 19/12/1999 | İstanbulspor AŞ | - | Gaziantepspor | 1:1 | ||||
| 14. Round | 26/12/1999 | Gaziantepspor | - | Samsunspor | 5:2 | ||||
| 23. Round | 04/03/2000 | Erzurumspor (1968-2015) | - | Gaziantepspor | 1:1 |
Turkey