Round 18
|
| Saturday, 6 September 2008 |
| Suwon Bluewings - FC Seoul |
| Daejon Citizen - Pohang Steelers |
| Daegu FC - Chonbuk Motors |
| Gyeongnam - Chunnam Dragons |
| Sunday, 7 September 2008 |
| Busan I'Park - Jeju United |
| Gwangju Sangmu - Ulsan Hyundai |
| Seongnam Ilhwa - Incheon United |
Round 19
|
| Saturday, 13 September 2008 |
| Busan I'Park - Chunnam Dragons |
| Ulsan Hyundai - Suwon Bluewings |
| Daejon Citizen - Seongnam Ilhwa |
| Jeju United - FC Seoul |
| Daegu FC - Pohang Steelers |
| Incheon United - Gyeongnam |
| Monday, 15 September 2008 |
| Chonbuk Motors - Gwangju Sangmu |
Round 20
|
| Saturday, 20 September 2008 |
| Chunnam Dragons - Gwangju Sangmu |
| Pohang Steelers - Busan I'Park |
| Jeju United - Suwon Bluewings |
| Incheon United - Daegu FC |
| Seongnam Ilhwa - Ulsan Hyundai |
| Sunday, 21 September 2008 |
| Chonbuk Motors - Daejon Citizen |
| FC Seoul - Gyeongnam |
Round 21
|
| Saturday, 27 September 2008 |
| Busan I'Park - Incheon United |
| Suwon Bluewings - Chonbuk Motors |
| Pohang Steelers - Seongnam Ilhwa |
| Gyeongnam - Daejon Citizen |
| Sunday, 28 September 2008 |
| Gwangju Sangmu - Daegu FC |
| Jeju United - Ulsan Hyundai |
| FC Seoul - Chunnam Dragons |
K-League 2008