1. Round | 01/03/2018 | Jeju United | - | FC Seoul | 0:0 | ||||
2. Round | 11/03/2018 | FC Seoul | - | Gangwon FC | 1:2 | ||||
3. Round | 18/03/2018 | Jeonbuk FC | - | FC Seoul | 2:1 | ||||
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 | ||||
10. Round | 28/04/2018 | FC Seoul | - | Sangju Sangmu | 0:0 | ||||
19. Round | 22/07/2018 | Incheon United | - | FC Seoul | 2:1 | ||||
21. Round | 04/08/2018 | FC Seoul | - | Jeju United | 3:0 | ||||
23. Round | 15/08/2018 | Suwon Bluewings | - | FC Seoul | 1:2 | ||||
24. Round | 19/08/2018 | FC Seoul | - | Jeonbuk FC | 0:2 | ||||
26. Round | 25/08/2018 | Ulsan Hyundai FC | - | FC Seoul | 4:1 |