| 28 Feb 21 | r01        | Busan IParkBusan IPark | 0 - 3 | Seoul E-LandSeoul E-Land |
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| 07 Mar 21 | r02        | Daejeon Hana CitizenDaejeon Hana | 1 - 2 | Busan IParkBusan IPark |
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| 13 Mar 21 | r03        | Chungnam AsanChungnam Asan | 4 - 0 | Busan IParkBusan IPark |
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| 21 Mar 21 | r04        | Busan IParkBusan IPark | 2 - 1 | Sangju SangmuSangju Sangmu |
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| 03 Apr 21 | r05        | Busan IParkBusan IPark | 1 - 1 | Ansan GreenersAnsan Greener |
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| 11 Apr 21 | r06        | AnyangAnyang | 2 - 1 | Busan IParkBusan IPark |
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| 17 Apr 21 | r07        | Gyeongnam FCGyeongnam FC | 1 - 2 | Busan IParkBusan IPark |
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| 24 Apr 21 | r08        | Busan IParkBusan IPark | 0 - 1 | Jeonnam DragonsJeonnam Drago |
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| 02 May 21 | r09        | Bucheon FC 1995Bucheon FC 19 | 0 - 2 | Busan IParkBusan IPark |
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| 05 May 21 | r10        | Sangju SangmuSangju Sangmu | 1 - 0 | Busan IParkBusan IPark |
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| 10 May 21 | r11        | Busan IParkBusan IPark | 4 - 1 | Daejeon Hana CitizenDaejeon Hana |
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| 23 May 21 | r13        | Jeonnam DragonsJeonnam Drago | 1 - 2 | Busan IParkBusan IPark |
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| 29 May 21 | r14        | Busan IParkBusan IPark | 1 - 1 | Bucheon FC 1995Bucheon FC 19 |
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| 05 Jun 21 | r15        | Busan IParkBusan IPark | 2 - 3 | Gyeongnam FCGyeongnam FC |
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| 13 Jun 21 | r16        | Ansan GreenersAnsan Greener | 2 - 3 | Busan IParkBusan IPark |
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| 20 Jun 21 | r17        | Busan IParkBusan IPark | 4 - 5 | AnyangAnyang |
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| 27 Jun 21 | r18        | Seoul E-LandSeoul E-Land | 0 - 1 | Busan IParkBusan IPark |
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| 04 Jul 21 | r19        | Bucheon FC 1995Bucheon FC 19 | 0 - 0 | Busan IParkBusan IPark |
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| 08 Jul 21 | r12        | Busan IParkBusan IPark | 0 - 0 | Chungnam AsanChungnam Asan |
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| 11 Jul 21 | r20        | Busan IParkBusan IPark | 0 - 1 | Jeonnam DragonsJeonnam Drago |
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| 17 Jul 21 | r21        | Busan IParkBusan IPark | 4 - 0 | Ansan GreenersAnsan Greener |
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| 24 Jul 21 | r22        | Daejeon Hana CitizenDaejeon Hana | 3 - 1 | Busan IParkBusan IPark |
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| 07 Aug 21 | r24        | AnyangAnyang | 1 - 1 | Busan IParkBusan IPark |
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| 16 Aug 21 | r25        | Gyeongnam FCGyeongnam FC | 1 - 0 | Busan IParkBusan IPark |
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| 23 Aug 21 | r26        | Busan IParkBusan IPark | 0 - 6 | Sangju SangmuSangju Sangmu |
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| 28 Aug 21 | r27        | Chungnam AsanChungnam Asan | 3 - 2 | Busan IParkBusan IPark |
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| 04 Sep 21 | r28        | Busan IParkBusan IPark | 1 - 1 | Daejeon Hana CitizenDaejeon Hana |
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| 12 Sep 21 | r29        | Ansan GreenersAnsan Greener | 1 - 1 | Busan IParkBusan IPark |
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| 18 Sep 21 | r30        | Busan IParkBusan IPark | 1 - 3 | AnyangAnyang |
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| 22 Sep 21 | r23        | Busan IParkBusan IPark | 1 - 1 | Seoul E-LandSeoul E-Land |
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| 27 Sep 21 | r31        | Seoul E-LandSeoul E-Land | 1 - 2 | Busan IParkBusan IPark |
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| 03 Oct 21 | r32        | Busan IParkBusan IPark | 2 - 1 | Chungnam AsanChungnam Asan |
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| 09 Oct 21 | r33        | Busan IParkBusan IPark | 0 - 1 | Bucheon FC 1995Bucheon FC 19 |
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| 17 Oct 21 | r34        | Jeonnam DragonsJeonnam Drago | 2 - 0 | Busan IParkBusan IPark |
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| 23 Oct 21 | r35        | Busan IParkBusan IPark | 1 - 0 | Gyeongnam FCGyeongnam FC |
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| 31 Oct 21 | r36        | Sangju SangmuSangju Sangmu | 2 - 2 | Busan IParkBusan IPark |