| 1. Jornada | 01.03.2018 | Jeonbuk FC | - | Ulsan Hyundai FC | 2:0 | ||||
| 2. Jornada | 10.03.2018 | Ulsan Hyundai FC | - | Sangju Sangmu | 0:2 | ||||
| 4. Jornada | 31.03.2018 | Pohang Steelers | - | Ulsan Hyundai FC | 2:1 | ||||
| 10. Jornada | 28.04.2018 | Ulsan Hyundai FC | - | Jeonnam Dragons | 1:1 | ||||
| 11. Jornada | 02.05.2018 | Suwon Bluewings | - | Ulsan Hyundai FC | 0:0 | ||||
| 13. Jornada | 13.05.2018 | Ulsan Hyundai FC | - | Gyeongnam FC | 1:1 | ||||
| 14. Jornada | 20.05.2018 | Incheon United | - | Ulsan Hyundai FC | 1:1 | ||||
| 17. Jornada | 15.07.2018 | FC Seoul | - | Ulsan Hyundai FC | 1:1 |  |
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| 18. Jornada | 18.07.2018 | Gangwon FC | - | Ulsan Hyundai FC | 3:3 | ||||
| 26. Jornada | 25.08.2018 | Ulsan Hyundai FC | - | FC Seoul | 4:1 | ||||
| 30. Jornada | 26.09.2018 | Ulsan Hyundai FC | - | Jeju United | 3:2 | ||||
| 31. Jornada | 29.09.2018 | Suwon Bluewings | - | Ulsan Hyundai FC | 2:2 | ||||
| 32. Jornada | 07.10.2018 | Ulsan Hyundai FC | - | Jeonbuk FC | 2:2 |
Corea del Sur