| 1. Jornada | 01.03.2021 | Seongnam FC | - | Jeju United | 0:0 | ||||
| 2. Jornada | 07.03.2021 | Suwon Bluewings | - | Seongnam FC | 1:0 | ||||
| 3. Jornada | 10.03.2021 | Seongnam FC | - | FC Seoul | 1:0 | ||||
| 4. Jornada | 14.03.2021 | Suwon FC | - | Seongnam FC | 1:2 | ||||
| 5. Jornada | 17.03.2021 | Gangwon FC | - | Seongnam FC | 0:0 | ||||
| 6. Jornada | 21.03.2021 | Seongnam FC | - | Pohang Steelers | 2:1 | ||||
| 7. Jornada | 03.04.2021 | Seongnam FC | - | Ulsan Hyundai FC | 0:1 | ||||
| 10. Jornada | 18.04.2021 | Jeonbuk FC | - | Seongnam FC | 1:0 | ||||
| 13. Jornada | 30.04.2021 | FC Seoul | - | Seongnam FC | 2:2 |  |
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| 18. Jornada | 22.05.2021 | Jeju United | - | Seongnam FC | 2:2 | |
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| 19. Jornada | 29.05.2021 | Seongnam FC | - | Suwon FC | 2:3 | |
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| 15. Jornada | 06.06.2021 | Seongnam FC | - | Jeonbuk FC | 1:5 | ||||
| 25. Jornada | 14.08.2021 | Suwon Bluewings | - | Seongnam FC | 1:2 | ||||
| 30. Jornada | 19.09.2021 | Incheon United | - | Seongnam FC | 0:1 | ||||
| 31. Jornada | 22.09.2021 | Suwon FC | - | Seongnam FC | 3:1 | ||||
| 32. Jornada | 26.09.2021 | Seongnam FC | - | Gangwon FC | 2:0 | ||||
| 33. Jornada | 03.10.2021 | Jeju United | - | Seongnam FC | 2:1 |
Corea del Sur