1. Round | 04/08/2018 | VfL Bochum | - | 1. FC Köln | 0:2 | ||||
2. Round | 13/08/2018 | 1. FC Köln | - | 1. FC Union Berlin | 1:1 | ||||
3. Round | 25/08/2018 | 1. FC Köln | - | Erzgebirge Aue | 3:1 | ||||
4. Round | 02/09/2018 | FC St. Pauli | - | 1. FC Köln | 3:5 | ||||
5. Round | 16/09/2018 | 1. FC Köln | - | SC Paderborn 07 | 3:5 | ||||
6. Round | 21/09/2018 | SV Sandhausen | - | 1. FC Köln | 0:2 | ||||
7. Round | 25/09/2018 | 1. FC Köln | - | FC Ingolstadt 04 | 2:1 | ||||
8. Round | 28/09/2018 | Arminia Bielefeld | - | 1. FC Köln | 1:3 | ||||
9. Round | 08/10/2018 | 1. FC Köln | - | MSV Duisburg | 1:2 | ||||
10. Round | 20/10/2018 | Holstein Kiel | - | 1. FC Köln | 1:1 | ||||
12. Round | 05/11/2018 | Hamburger SV | - | 1. FC Köln | 1:0 | ||||
14. Round | 24/11/2018 | SV Darmstadt 98 | - | 1. FC Köln | 0:3 | ||||
15. Round | 01/12/2018 | 1. FC Köln | - | SpVgg Greuther Fürth | 4:0 | ||||
16. Round | 07/12/2018 | Jahn Regensburg | - | 1. FC Köln | 1:3 | ||||
17. Round | 17/12/2018 | 1. FC Köln | - | 1. FC Magdeburg | 3:0 | ||||
18. Round | 21/12/2018 | 1. FC Köln | - | VfL Bochum | 2:3 | ||||
19. Round | 31/01/2019 | 1. FC Union Berlin | - | 1. FC Köln | 2:0 | ||||
23. Round | 23/02/2019 | 1. FC Köln | - | SV Sandhausen | 3:1 |