3. Round | 18/03/2018 | Jeonbuk FC | - | FC Seoul | 2:1 | ||||
4. Round | 01/04/2018 | FC Seoul | - | Incheon United | 1:1 | ||||
5. Round | 08/04/2018 | Suwon Bluewings | - | FC Seoul | 0:0 | ||||
6. Round | 11/04/2018 | FC Seoul | - | Pohang Steelers | 2:1 | ||||
7. Round | 14/04/2018 | Ulsan Hyundai FC | - | FC Seoul | 1:0 | ||||
13. Round | 12/05/2018 | Gangwon FC | - | FC Seoul | 1:1 | ||||
16. Round | 11/07/2018 | Pohang Steelers | - | FC Seoul | 0:3 | ||||
17. Round | 15/07/2018 | FC Seoul | - | Ulsan Hyundai FC | 1:1 | ||||
18. Round | 18/07/2018 | FC Seoul | - | Jeonnam Dragons | 2:1 | ||||
19. Round | 22/07/2018 | Incheon United | - | FC Seoul | 2:1 | ||||
21. Round | 04/08/2018 | FC Seoul | - | Jeju United | 3:0 | ||||
24. Round | 19/08/2018 | FC Seoul | - | Jeonbuk FC | 0:2 | ||||
25. Round | 22/08/2018 | FC Seoul | - | Pohang Steelers | 0:1 | ||||
26. Round | 25/08/2018 | Ulsan Hyundai FC | - | FC Seoul | 4:1 | ||||
29. Round | 22/09/2018 | Gyeongnam FC | - | FC Seoul | 2:1 |