| 1. Round | 28/02/2021 | Pohang Steelers | - | Incheon United | 2:1 |  |
|||
| 2. Round | 06/03/2021 | Gangwon FC | - | Pohang Steelers | 1:3 | ||||
| 3. Round | 09/03/2021 | Jeju United | - | Pohang Steelers | 1:0 | ||||
| 4. Round | 13/03/2021 | Pohang Steelers | - | Ulsan Hyundai FC | 1:1 | |
|||
| 5. Round | 17/03/2021 | Pohang Steelers | - | Suwon Bluewings | 0:3 |  |
|||
| 6. Round | 21/03/2021 | Seongnam FC | - | Pohang Steelers | 2:1 | |
 |
||
| 9. Round | 10/04/2021 | FC Seoul | - | Pohang Steelers | 1:2 | |
|||
| 10. Round | 17/04/2021 | Gwangju FC | - | Pohang Steelers | 0:1 | ||||
| 11. Round | 20/04/2021 | Pohang Steelers | - | Suwon FC | 1:0 | |
|||
| 12. Round | 24/04/2021 | Pohang Steelers | - | Jeju United | 0:0 | ||||
| 13. Round | 01/05/2021 | Suwon Bluewings | - | Pohang Steelers | 1:1 | ||||
| 14. Round | 08/05/2021 | Pohang Steelers | - | Gangwon FC | 1:1 | ||||
| 15. Round | 11/05/2021 | Incheon United | - | Pohang Steelers | 1:1 | ||||
| 17. Round | 18/05/2021 | Suwon FC | - | Pohang Steelers | 3:4 | |
|||
| 18. Round | 22/05/2021 | Ulsan Hyundai FC | - | Pohang Steelers | 1:0 | ||||
| 19. Round | 30/05/2021 | Pohang Steelers | - | Gwangju FC | 1:0 | |
South Korea