| 1. Jornada | 09.05.2020 | Gwangju FC | - | Seongnam FC | 0:2 | ||||
| 2. Jornada | 17.05.2020 | Seongnam FC | - | Incheon United | 0:0 | ||||
| 3. Jornada | 23.05.2020 | Gangwon FC | - | Seongnam FC | 1:1 | ||||
| 4. Jornada | 31.05.2020 | FC Seoul | - | Seongnam FC | 0:1 | ||||
| 5. Jornada | 07.06.2020 | Seongnam FC | - | Daegu FC | 1:2 | ||||
| 6. Jornada | 13.06.2020 | Ulsan Hyundai FC | - | Seongnam FC | 1:0 | ||||
| 7. Jornada | 16.06.2020 | Seongnam FC | - | Suwon Bluewings | 0:2 | ||||
| 8. Jornada | 20.06.2020 | Seongnam FC | - | Sangju Sangmu | 0:1 | ||||
| 9. Jornada | 27.06.2020 | Busan IPark | - | Seongnam FC | 1:1 | ||||
| 10. Jornada | 05.07.2020 | Seongnam FC | - | Pohang Steelers | 0:4 | ||||
| 11. Jornada | 11.07.2020 | Jeonbuk FC | - | Seongnam FC | 2:2 | ||||
| 12. Jornada | 19.07.2020 | Suwon Bluewings | - | Seongnam FC | 0:1 | ||||
| 13. Jornada | 25.07.2020 | Seongnam FC | - | Gangwon FC | 0:0 | ||||
| 14. Jornada | 01.08.2020 | Seongnam FC | - | FC Seoul | 1:2 | ||||
| 15. Jornada | 09.08.2020 | Incheon United | - | Seongnam FC | 0:2 | ||||
| 16. Jornada | 14.08.2020 | Seongnam FC | - | Busan IPark | 1:1 | ||||
| 18. Jornada | 30.08.2020 | Pohang Steelers | - | Seongnam FC | 2:1 | ||||
| 22. Jornada | 20.09.2020 | Seongnam FC | - | Gwangju FC | 0:2 |
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