| 1. Ronde | 16.09.2012 | Incheon United | - | Gangwon FC | 2:1 | ||||
| 2. Ronde | 22.09.2012 | Daejeon Citizen | - | Incheon United | 1:1 |  |
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| 4. Ronde | 03.10.2012 | Incheon United | - | Daegu FC | 2:1 | |
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| 5. Ronde | 06.10.2012 | Incheon United | - | Seongnam Ilhwa Chunma | 0:0 | ||||
| 6. Ronde | 21.10.2012 | Chunnam Dragons | - | Incheon United | 0:0 | ||||
| 7. Ronde | 27.10.2012 | Incheon United | - | Gwangju FC | 3:2 | ||||
| 8. Ronde | 03.11.2012 | Seongnam Ilhwa Chunma | - | Incheon United | 1:2 |  |
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| 9. Ronde | 11.11.2012 | Incheon United | - | Chunnam Dragons | 0:0 | |
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| 11. Ronde | 21.11.2012 | Gwangju FC | - | Incheon United | 1:1 | ||||
| 12. Ronde | 25.11.2012 | Daegu FC | - | Incheon United | 2:2 | ||||
| 14. Ronde | 01.12.2012 | Gangwon FC | - | Incheon United | 2:1 |
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