| 4. Journée | 29.05.2020 | Daegu FC | - | Sangju Sangmu | 1:1 | ||||
| 6. Journée | 13.06.2020 | Sangju Sangmu | - | Pohang Steelers | 2:4 | ||||
| 7. Journée | 17.06.2020 | Sangju Sangmu | - | FC Seoul | 1:0 |  |
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| 8. Journée | 20.06.2020 | Seongnam FC | - | Sangju Sangmu | 0:1 | ||||
| 9. Journée | 28.06.2020 | Suwon Bluewings | - | Sangju Sangmu | 0:1 | ||||
| 10. Journée | 05.07.2020 | Sangju Sangmu | - | Jeonbuk FC | 1:0 | ||||
| 11. Journée | 11.07.2020 | Incheon United | - | Sangju Sangmu | 1:1 | |
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| 12. Journée | 18.07.2020 | Sangju Sangmu | - | Daegu FC | 2:0 | ||||
| 13. Journée | 25.07.2020 | Sangju Sangmu | - | Ulsan Hyundai FC | 1:5 | ||||
| 14. Journée | 02.08.2020 | Gangwon FC | - | Sangju Sangmu | 2:2 |  |
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| 15. Journée | 09.08.2020 | Sangju Sangmu | - | Busan IPark | 2:0 | ||||
| 16. Journée | 15.08.2020 | FC Seoul | - | Sangju Sangmu | 2:1 | ||||
| 19. Journée | 04.09.2020 | Sangju Sangmu | - | Suwon Bluewings | 1:0 | ||||
| 20. Journée | 12.09.2020 | Sangju Sangmu | - | Seongnam FC | 0:0 | ||||
| 22. Journée | 20.09.2020 | Pohang Steelers | - | Sangju Sangmu | 4:3 |
Corée du Sud