Time Zone – GMT-5 (America/New_York)
| 1 | Byeoksan | Chungju Citizen | 4 : 2 |
| 2 | Bye | Gimpo FC | |
| 3 | Anyang | Bye | |
| 4 | Siheung Citizen | Seoul United | 3 : 2 |
| 8 | Bye | Jeonbuk | |
| 9 | Jinju Citizen | Jeonnam Sinan | 5 : 1 |
| 10 | Bye | Asan | |
| 12 | Bye | Daejeon | |
| 13 | Jeju Utd | Bye | |
| 15 | Cheonan City | Bye | |
| 16 | Yangsan Eogok | Sejong Vanesse | 2 : 1 |
| 17 | Pohang | Bye | |
| 21 | Jeonbuk Jeonju | Gyeongju KHNP | 1 : 9 |
| 22 | Bye | Ansan Greeners | |
| 23 | Suwon Bluewings | Bye | |
| 24 | Chuncheon | Jeonju Citizen | 2 : 0 |
| 25 | Daejeon Korail | Dangjin Citizen | 3 : 1 |
| 26 | Bye | Seoul E-Land | |
| 28 | Bye | Seoul | |
| 29 | Gangwon | Bye | |
| 31 | Hwaseong | Bye | |
| 32 | Daegu Cheongsol | Yeoju Citizen | 0 : 4 |
| 33 | Changwon | Yangju Dukgye | 8 : 0 |
| 34 | Bye | Mokpo | |
| 35 | Bucheon FC 1995 | Bye | |
| 36 | Daejeon Seobu | Busan Kyotong | 1 : 6 |
| 40 | Bye | Gwangju FC | |
| 41 | Yangpyeong | Pocheon | 0 : 3 |
| 42 | Bye | Seongnam | |
| 44 | Bye | Suwon FC | |
| 45 | Daegu | Bye | |
| 47 | Cheongju | Bye | |
| 48 | Together | Geoje | 1 : 6 |
| 49 | Ulsan HD | Bye | |
| 53 | Paju Citizen | Namyangju | 2 : 1 |
| 54 | Bye | Gyeongnam | |
| 55 | Jeonnam | Bye | |
| 56 | Gangneung | Seoul Jungnang | 4 : 0 |
| 57 | Pyeongchang United | Pyeongtaek Citizen | 3 : 4 |
| 58 | Bye | Gimhae | |
| 60 | Bye | Incheon | |
| 61 | Gimcheon Sangmu | Bye | |
| 63 | Busan | Bye | |
| 64 | Bye | Ulsan Citizen |
| 1 | Byeoksan | Gimpo FC | 1 : 3 |
| 2 | Anyang | Siheung Citizen | 1 : 0 |
| 4 | Bye | Jeonbuk | |
| 5 | Jinju Citizen | Asan | 1 : 0 |
| 6 | Bye | Daejeon | |
| 7 | Jeju Utd | Bye | |
| 8 | Cheonan City | Yangsan Eogok | 4 : 0 |
| 9 | Pohang | Bye | |
| 11 | Gyeongju KHNP | Ansan Greeners | 0 : 1 |
| 12 | Suwon Bluewings | Chuncheon | 2 : 1 |
| 13 | Daejeon Korail | Seoul E-Land | 1 : 2 |
| 14 | Bye | Seoul | |
| 15 | Gangwon | Bye | |
| 16 | Hwaseong | Yeoju Citizen | 2 : 0 |
| 17 | Changwon | Mokpo | 0 : 1 |
| 18 | Bucheon FC 1995 | Busan Kyotong | 2 : 1 |
| 20 | Bye | Gwangju FC | |
| 21 | Pocheon | Seongnam | 0 : 3 |
| 22 | Bye | Suwon FC | |
| 23 | Daegu | Bye | |
| 24 | Cheongju | Geoje | 2 : 0 |
| 25 | Ulsan HD | Bye | |
| 27 | Paju Citizen | Gyeongnam | 0 : 1 |
| 28 | Jeonnam | Gangneung | 1 : 0 |
| 29 | Pyeongtaek Citizen | Gimhae | 1 : 5 |
| 30 | Bye | Incheon | |
| 31 | Gimcheon Sangmu | Bye | |
| 32 | Busan | Ulsan Citizen | 1 : 0 |
| 1 | Gimpo FC | Anyang | 1 : 0 |
| 2 | Bye | Jeonbuk | |
| 3 | Jinju Citizen | Daejeon | 0 : 2 |
| 4 | Jeju Utd | Cheonan City | 3 : 2 |
| 5 | Pohang | Bye | |
| 6 | Ansan Greeners | Suwon Bluewings | 0 : 1 |
| 7 | Seoul E-Land | Seoul | 0 : 1 |
| 8 | Gangwon | Hwaseong | 3 : 1 |
| 9 | Mokpo | Bucheon FC 1995 | 1 : 2 |
| 10 | Bye | Gwangju FC | |
| 11 | Seongnam | Suwon FC | 1 : 0 |
| 12 | Daegu | Cheongju | 1 : 2 |
| 13 | Ulsan HD | Bye | |
| 14 | Gyeongnam | Jeonnam | 1 : 0 |
| 15 | Gimhae | Incheon | 0 : 1 |
| 16 | Gimcheon Sangmu | Busan | 3 : 2 |
| 1 | Gimpo FC | Jeonbuk | 1 : 0 |
| 2 | Daejeon | Jeju Utd | 0 : 1 |
| 3 | Pohang | Suwon Bluewings | 2 : 1 |
| 4 | Seoul | Gangwon | 1 : 0 |
| 5 | Bucheon FC 1995 | Gwangju FC | 2 : 3 |
| 6 | Seongnam | Cheongju | 2 : 1 |
| 7 | Ulsan HD | Gyeongnam | 5 : 4 |
| 8 | Incheon | Gimcheon Sangmu | 1 : 0 |
| 1 | Gimpo FC | Jeju Utd | 0 : 1 |
| 2 | Pohang | Seoul | 5 : 1 |
| 3 | Gwangju FC | Seongnam | 3 : 2 |
| 4 | Ulsan HD | Incheon | 1 : 0 |
| 1 | Jeju Utd | Pohang | 1 : 2, 2 : 2 |
| 2 | Gwangju FC | Ulsan HD | 2 : 2, 0 : 1 |
| 1 | Pohang | Ulsan HD |
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