| 1. Ronde | 28.02.2021 | Pohang Steelers | - | Incheon United | 2:1 | ||||
| 8. Ronde | 07.04.2021 | Incheon United | - | Suwon Bluewings | 0:0 | ||||
| 11. Ronde | 21.04.2021 | Seongnam FC | - | Incheon United | 1:3 | ||||
| 13. Ronde | 02.05.2021 | Incheon United | - | Gangwon FC | 1:0 | ||||
| 26. Ronde | 06.10.2021 | Incheon United | - | Gangwon FC | 0:1 |  |
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