1. Round | 27/02/2021 | Jeonbuk FC | - | FC Seoul | 2:0 | ||||
2. Round | 07/03/2021 | FC Seoul | - | Suwon FC | 3:0 | ||||
3. Round | 10/03/2021 | Seongnam FC | - | FC Seoul | 1:0 | ||||
4. Round | 13/03/2021 | Incheon United | - | FC Seoul | 0:1 | ||||
5. Round | 17/03/2021 | FC Seoul | - | Gwangju FC | 2:1 | ||||
6. Round | 21/03/2021 | Suwon Bluewings | - | FC Seoul | 1:2 | ||||
7. Round | 03/04/2021 | FC Seoul | - | Gangwon FC | 0:1 | ||||
9. Round | 10/04/2021 | FC Seoul | - | Pohang Steelers | 1:2 | ||||
10. Round | 17/04/2021 | FC Seoul | - | Daegu FC | 0:1 | ||||
17. Round | 14/07/2021 | FC Seoul | - | Incheon United | 0:1 | ||||
21. Round | 24/07/2021 | Pohang Steelers | - | FC Seoul | 0:1 | ||||
22. Round | 31/07/2021 | FC Seoul | - | Ulsan Hyundai FC | 0:0 | ||||
23. Round | 08/08/2021 | FC Seoul | - | Gwangju FC | 1:0 | ||||
25. Round | 15/08/2021 | Jeonbuk FC | - | FC Seoul | 3:2 | ||||
26. Round | 22/08/2021 | FC Seoul | - | Pohang Steelers | 2:2 | ||||
27. Round | 25/08/2021 | FC Seoul | - | Ulsan Hyundai FC | 1:2 | ||||
28. Round | 29/08/2021 | Jeju United | - | FC Seoul | 1:0 | ||||
33. Round | 03/10/2021 | FC Seoul | - | Daegu FC | 1:1 |