2. Round | 06/03/2021 | Gwangju FC | - | Ulsan Hyundai FC | 0:1 | ||||
3. Round | 09/03/2021 | Ulsan Hyundai FC | - | Incheon United | 3:1 | ||||
4. Round | 13/03/2021 | Pohang Steelers | - | Ulsan Hyundai FC | 1:1 | ||||
7. Round | 03/04/2021 | Seongnam FC | - | Ulsan Hyundai FC | 0:1 | ||||
9. Round | 11/04/2021 | Suwon FC | - | Ulsan Hyundai FC | 0:1 | ||||
10. Round | 18/04/2021 | Suwon Bluewings | - | Ulsan Hyundai FC | 3:0 | ||||
11. Round | 21/04/2021 | Ulsan Hyundai FC | - | Jeonbuk FC | 0:0 | ||||
12. Round | 25/04/2021 | Incheon United | - | Ulsan Hyundai FC | 0:0 | ||||
16. Round | 16/05/2021 | Ulsan Hyundai FC | - | Suwon Bluewings | 1:1 | ||||
17. Round | 19/05/2021 | Jeonbuk FC | - | Ulsan Hyundai FC | 2:4 | ||||
14. Round | 20/06/2021 | Ulsan Hyundai FC | - | Seongnam FC | 2:2 | ||||
21. Round | 25/07/2021 | Ulsan Hyundai FC | - | Suwon FC | 2:5 | ||||
22. Round | 31/07/2021 | FC Seoul | - | Ulsan Hyundai FC | 0:0 | ||||
23. Round | 07/08/2021 | Ulsan Hyundai FC | - | Gangwon FC | 2:1 | ||||
26. Round | 22/08/2021 | Ulsan Hyundai FC | - | Suwon Bluewings | 3:1 | ||||
30. Round | 18/09/2021 | Daegu FC | - | Ulsan Hyundai FC | 2:1 | ||||
33. Round | 02/10/2021 | Suwon FC | - | Ulsan Hyundai FC | 0:3 |