| 21. Ronde | 25.07.2021 | Gangwon FC | - | Jeju United | 2:2 | ||||
| 22. Ronde | 31.07.2021 | Jeju United | - | Incheon United | 1:4 | ||||
| 23. Ronde | 07.08.2021 | Suwon Bluewings | - | Jeju United | 0:0 | ||||
| 25. Ronde | 14.08.2021 | Jeju United | - | Ulsan Hyundai FC | 2:2 | ||||
| 20. Ronde | 18.08.2021 | FC Seoul | - | Jeju United | 0:1 |  |
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| 26. Ronde | 21.08.2021 | Suwon FC | - | Jeju United | 1:0 | ||||
| 28. Ronde | 29.08.2021 | Jeju United | - | FC Seoul | 1:0 | ||||
| 27. Ronde | 10.10.2021 | Gangwon FC | - | Jeju United | 2:2 |
Zuid-Korea