3. Round | 10/03/2021 | Seongnam FC | - | FC Seoul | 1:0 | ||||
9. Round | 10/04/2021 | FC Seoul | - | Pohang Steelers | 1:2 | ||||
10. Round | 17/04/2021 | FC Seoul | - | Daegu FC | 0:1 | ||||
18. Round | 23/05/2021 | Gangwon FC | - | FC Seoul | 0:0 | ||||
30. Round | 19/09/2021 | FC Seoul | - | Suwon FC | 2:1 | ||||
31. Round | 22/09/2021 | FC Seoul | - | Incheon United | 0:0 | ||||
32. Round | 26/09/2021 | Suwon Bluewings | - | FC Seoul | 0:2 | ||||
33. Round | 03/10/2021 | FC Seoul | - | Daegu FC | 1:1 | ||||
24. Round | 24/10/2021 | Gangwon FC | - | FC Seoul | 1:4 |