2017 Main
| Pl | W | D | L | Diff | Pts | |||
| 1 | Gyeongnam | 36 | 24 | 7 | 5 | 69:36 | 33 | 79 |
| 2 | Busan | 36 | 19 | 11 | 6 | 52:30 | 22 | 68 |
| 3 | Asan | 36 | 15 | 9 | 12 | 44:37 | 7 | 54 |
| 4 | Seongnam | 36 | 13 | 14 | 9 | 38:30 | 8 | 53 |
| 5 | Bucheon FC 1995 | 36 | 15 | 7 | 14 | 50:46 | 4 | 52 |
| 6 | Suwon FC | 36 | 11 | 12 | 13 | 42:48 | -6 | 45 |
| 7 | Anyang | 36 | 10 | 9 | 17 | 40:58 | -18 | 39 |
| 8 | Seoul E-Land | 36 | 7 | 14 | 15 | 42:55 | -13 | 35 |
| 9 | Ansan Greeners | 36 | 7 | 12 | 17 | 36:54 | -18 | 33 |
| 10 | Daejeon | 36 | 6 | 11 | 19 | 41:60 | -19 | 29 |
Promotion ~ K League 1
Promotion ~ K~League Classic (Relegation: )
2017 Promotion
Quarter-finals
| 1 | Gimcheon Sangmu | Bye | |
| 3 | Busan | Bye | |
| 4 | Asan | Seongnam | 1 : 0 |
Semi-finals
| 1 | Gimcheon Sangmu | Bye | |
| 2 | Busan | Asan | 3 : 0 |
Final
| 1 | Gimcheon Sangmu | Busan | 1 : 1, 1 : 0 |
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