1. Round | 01/03/2018 | Jeju United | - | FC Seoul | 0:0 | ||||
3. Round | 18/03/2018 | Ulsan Hyundai FC | - | Jeju United | 0:1 | ||||
4. Round | 31/03/2018 | Jeju United | - | Suwon Bluewings | 0:1 | ||||
12. Round | 05/05/2018 | Incheon United | - | Jeju United | 1:2 | ||||
16. Round | 11/07/2018 | Jeju United | - | Gyeongnam FC | 0:0 | ||||
27. Round | 02/09/2018 | Pohang Steelers | - | Jeju United | 2:2 | ||||
33. Round | 20/10/2018 | Jeju United | - | FC Seoul | 1:0 |