5. Round | 17/03/2021 | Gangwon FC | - | Seongnam FC | 0:0 | ||||
6. Round | 21/03/2021 | Seongnam FC | - | Pohang Steelers | 2:1 | ||||
7. Round | 03/04/2021 | Seongnam FC | - | Ulsan Hyundai FC | 0:1 | ||||
9. Round | 10/04/2021 | Seongnam FC | - | Gwangju FC | 2:0 | ||||
10. Round | 18/04/2021 | Jeonbuk FC | - | Seongnam FC | 1:0 | ||||
12. Round | 25/04/2021 | Seongnam FC | - | Suwon Bluewings | 0:1 | ||||
13. Round | 30/04/2021 | FC Seoul | - | Seongnam FC | 2:2 | ||||
18. Round | 22/05/2021 | Jeju United | - | Seongnam FC | 2:2 |