10. Round | 29/04/2018 | Incheon United | - | Gyeongnam FC | 2:3 | ||||
14. Round | 20/05/2018 | Incheon United | - | Ulsan Hyundai FC | 1:1 | ||||
15. Round | 07/07/2018 | Jeonbuk FC | - | Incheon United | 3:3 | ||||
16. Round | 11/07/2018 | Incheon United | - | Gangwon FC | 3:3 | ||||
17. Round | 14/07/2018 | Gyeongnam FC | - | Incheon United | 3:0 | ||||
18. Round | 18/07/2018 | Suwon Bluewings | - | Incheon United | 5:2 | ||||
19. Round | 22/07/2018 | Incheon United | - | FC Seoul | 2:1 | ||||
20. Round | 28/07/2018 | Jeonnam Dragons | - | Incheon United | 1:3 | ||||
21. Round | 04/08/2018 | Incheon United | - | Pohang Steelers | 1:2 | ||||
22. Round | 11/08/2018 | Daegu FC | - | Incheon United | 2:1 | ||||
24. Round | 19/08/2018 | Gangwon FC | - | Incheon United | 7:0 |