| 27 Feb 21 | r01        | Kashima AntlersKashima Antle | 1 - 3 | Shimizu S-PulseShimizu S-Pul |
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| 10 Mar 21 | r03        | Kashima AntlersKashima Antle | 3 - 1 | Shonan BellmareShonan Bellma |
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| 13 Mar 21 | r04        | Kashima AntlersKashima Antle | 1 - 1 | Sanfrecce HiroshimaSanfrecce Hir |
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| 17 Mar 21 | r05        | Avispa FukuokaAvispa Fukuok | 1 - 0 | Kashima AntlersKashima Antle |
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| 21 Mar 21 | r06        | Kashima AntlersKashima Antle | 0 - 1 | Nagoya GrampusNagoya Grampu |
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| 03 Apr 21 | r07        | Urawa Red DiamondsUrawa Red Dia | 2 - 1 | Kashima AntlersKashima Antle |
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| 07 Apr 21 | r08        | Kashima AntlersKashima Antle | 2 - 1 | Kashiwa ReysolKashiwa Reyso |
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| 11 Apr 21 | r09        | Hokkaido Consadole SapporHokkaido Cons | 2 - 2 | Kashima AntlersKashima Antle |
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| 17 Apr 21 | r10        | Tokushima VortisTokushima Vor | 0 - 1 | Kashima AntlersKashima Antle |
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| 24 Apr 21 | r11        | Kashima AntlersKashima Antle | 1 - 1 | Vissel KobeVissel Kobe |
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| 01 May 21 | r12        | Yokohama FCYokohama FC | 0 - 3 | Kashima AntlersKashima Antle |
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| 09 May 21 | r13        | Kashima AntlersKashima Antle | 3 - 0 | FC TokyoFC Tokyo |
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| 12 May 21 | r21        | Nagoya GrampusNagoya Grampu | 0 - 2 | Kashima AntlersKashima Antle |
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| 15 May 21 | r14        | Kashima AntlersKashima Antle | 5 - 3 | Yokohama F MarinosYokohama F Ma |
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| 22 May 21 | r15        | Sagan TosuSagan Tosu | 2 - 1 | Kashima AntlersKashima Antle |
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| 26 May 21 | r16        | Kashima AntlersKashima Antle | 1 - 0 | Cerezo OsakaCerezo Osaka |
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| 30 May 21 | r17        | Kawasaki FrontaleKawasaki Fron | 2 - 1 | Kashima AntlersKashima Antle |
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| 20 Jun 21 | r18        | Kashima AntlersKashima Antle | 1 - 1 | Vegalta SendaiVegalta Senda |
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| 23 Jun 21 | r19        | Oita TrinitaOita Trinita | 0 - 0 | Kashima AntlersKashima Antle |
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| 27 Jun 21 | r20        | Kashima AntlersKashima Antle | 4 - 0 | Hokkaido Consadole SapporHokkaido Cons |
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| 11 Jul 21 | r22        | Kashiwa ReysolKashiwa Reyso | 2 - 1 | Kashima AntlersKashima Antle |
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| 24 Jul 21 | r02        | Gamba OsakaGamba Osaka | 0 - 1 | Kashima AntlersKashima Antle |
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| 09 Aug 21 | r23        | Shonan BellmareShonan Bellma | 1 - 2 | Kashima AntlersKashima Antle |
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| 15 Aug 21 | r24        | Kashima AntlersKashima Antle | 3 - 0 | Tokushima VortisTokushima Vor |
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| 21 Aug 21 | r25        | Vissel KobeVissel Kobe | 1 - 0 | Kashima AntlersKashima Antle |
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| 25 Aug 21 | r26        | Shimizu S-PulseShimizu S-Pul | 0 - 4 | Kashima AntlersKashima Antle |
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| 28 Aug 21 | r27        | Yokohama F MarinosYokohama F Ma | 0 - 2 | Kashima AntlersKashima Antle |
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| 11 Sep 21 | r28        | Kashima AntlersKashima Antle | 0 - 3 | Avispa FukuokaAvispa Fukuok |
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| 18 Sep 21 | r29        | Kashima AntlersKashima Antle | 3 - 1 | Gamba OsakaGamba Osaka |
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| 22 Sep 21 | r32        | Kashima AntlersKashima Antle | 1 - 2 | Kawasaki FrontaleKawasaki Fron |
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| 26 Sep 21 | r30        | Cerezo OsakaCerezo Osaka | 1 - 2 | Kashima AntlersKashima Antle |
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| 02 Oct 21 | r31        | Kashima AntlersKashima Antle | 1 - 2 | Yokohama FCYokohama FC |
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| 23 Oct 21 | r33        | FC TokyoFC Tokyo | 1 - 2 | Kashima AntlersKashima Antle |
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| 03 Nov 21 | r35        | Sanfrecce HiroshimaSanfrecce Hir | 1 - 4 | Kashima AntlersKashima Antle |
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| 07 Nov 21 | r34        | Kashima AntlersKashima Antle | 1 - 0 | Urawa Red DiamondsUrawa Red Dia |
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| 20 Nov 21 | r36        | Kashima AntlersKashima Antle | 0 - 0 | Oita TrinitaOita Trinita |
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| 27 Nov 21 | r37        | Kashima AntlersKashima Antle | 1 - 0 | Sagan TosuSagan Tosu |
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| 04 Dec 21 | r38        | Vegalta SendaiVegalta Senda | 0 - 1 | Kashima AntlersKashima Antle |