| 2. Round | 07/03/2021 | Suwon Bluewings | - | Seongnam FC | 1:0 | ||||
| 4. Round | 14/03/2021 | Suwon Bluewings | - | Gangwon FC | 1:1 | ||||
| 5. Round | 17/03/2021 | Pohang Steelers | - | Suwon Bluewings | 0:3 | ||||
| 6. Round | 21/03/2021 | Suwon Bluewings | - | FC Seoul | 1:2 | ||||
| 7. Round | 03/04/2021 | Suwon Bluewings | - | Jeonbuk FC | 1:3 | ||||
| 8. Round | 07/04/2021 | Incheon United | - | Suwon Bluewings | 0:0 | ||||
| 9. Round | 11/04/2021 | Jeju United | - | Suwon Bluewings | 2:1 |  |
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| 10. Round | 18/04/2021 | Suwon Bluewings | - | Ulsan Hyundai FC | 3:0 | ||||
| 12. Round | 25/04/2021 | Seongnam FC | - | Suwon Bluewings | 0:1 | ||||
| 13. Round | 01/05/2021 | Suwon Bluewings | - | Pohang Steelers | 1:1 | ||||
| 18. Round | 23/05/2021 | Gwangju FC | - | Suwon Bluewings | 3:4 | ||||
| 20. Round | 20/07/2021 | Suwon Bluewings | - | Suwon FC | 1:2 | ||||
| 22. Round | 01/08/2021 | Gangwon FC | - | Suwon Bluewings | 3:0 | ||||
| 23. Round | 07/08/2021 | Suwon Bluewings | - | Jeju United | 0:0 | ||||
| 27. Round | 25/08/2021 | Suwon Bluewings | - | Suwon FC | 0:3 | ||||
| 32. Round | 26/09/2021 | Suwon Bluewings | - | FC Seoul | 0:2 |
South Korea