| 10. Journée | 04.07.2020 | Ulsan Hyundai FC | - | Incheon United | 4:1 | ||||
| 11. Journée | 11.07.2020 | Incheon United | - | Sangju Sangmu | 1:1 | ||||
| 12. Journée | 19.07.2020 | Incheon United | - | Jeonbuk FC | 1:1 |  |
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| 14. Journée | 01.08.2020 | Incheon United | - | Gwangju FC | 1:3 |  |
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| 15. Journée | 09.08.2020 | Incheon United | - | Seongnam FC | 0:2 | ||||
| 16. Journée | 16.08.2020 | Daegu FC | - | Incheon United | 0:1 | ||||
| 17. Journée | 22.08.2020 | Incheon United | - | Suwon Bluewings | 1:0 | ||||
| 18. Journée | 29.08.2020 | Sangju Sangmu | - | Incheon United | 3:1 | ||||
| 19. Journée | 06.09.2020 | Gangwon FC | - | Incheon United | 2:3 | ||||
| 20. Journée | 13.09.2020 | Busan IPark | - | Incheon United | 0:0 | |
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| 21. Journée | 16.09.2020 | Incheon United | - | FC Seoul | 1:0 | ||||
| 22. Journée | 20.09.2020 | Incheon United | - | Ulsan Hyundai FC | 0:1 |
Costa Rica