diff --git a/_data/championship_details/_09.yml b/_data/championship_details/_09.yml
deleted file mode 100644
index d170d85..0000000
--- a/_data/championship_details/_09.yml
+++ /dev/null
@@ -1,27 +0,0 @@
----
-title: Splathon#9
-date: 2019-02-24
-place: Undisclosed
-
-
-ranking:
-  - rank: 優勝
-    name: 道玄坂高校イカ部（仮）
-  - rank: 準優勝
-    name: グーグルシュライバー😗
-
-blogs:
-  - title: 'Splathon #9 に参加してきた'
-    url: https://lealog-splatoon.hatenablog.jp/entry/2019/02/26/182959
-  - title: splathon#9（スプラトゥーン2の企業対抗オフライン大会）で感じたeSportsのあれこれ
-    url: https://note.com/tahni/n/n12f92a100de6
-  - title: Splathon#9のネットワーク検証と構成について
-    url: https://kfuka.hateblo.jp/entry/splathon9-network-configuration
-  - title: 【Splatoon大会】外から観たSplathon#9の風景
-    url: https://neetless777.hatenablog.com/entry/splathon_9_report
-  - title: 'Splathon #9／企業対抗戦オフライン大会を視聴【非公式大会】'
-    url: https://a-nosuri.com/blog-entry-401.html
-  - title: 'Splathon #9 ２回目の出場で準優勝したので感想を書く'
-    url: https://blog.nagayama.dev/blog/2019/03/01/175130
-  - title: Splathon#9にAjitoonで参加してきた感想と今までの振り返り
-    url: https://arata.hatenadiary.com/entry/2019/02/26/000701
diff --git a/_data/championships.yml b/_data/championships.yml
index f507b80..6500382 100644
--- a/_data/championships.yml
+++ b/_data/championships.yml
@@ -38,8 +38,3 @@
   place: DMMイベントスペース
   link: /championships/08/
   status: fixed
-- title: Splathon#9
-  date: 2019-02-24
-  place: Undisclosed
-  link: /championships/09/
-  status: fixed
diff --git a/championships/09/index.html b/championships/09/index.html
deleted file mode 100644
index 6e88737..0000000
--- a/championships/09/index.html
+++ /dev/null
@@ -1,72 +0,0 @@
----
-layout: page
-title: Splathon#9
-permalink: /championships/09/
----
-
-{% assign detail = site.data.championship_details._09 %}
-
-<section>
-  <table>
-    <tbody>
-      <tr>
-        <th>大会名</th>
-        <td>{{ detail.title }}</td>
-      </tr>
-      <tr>
-        <th>日付</th>
-        <td>{{ detail.date }}</td>
-      </tr>
-      <tr>
-        <th>会場</th>
-        <td>{{ detail.place }}</td>
-      </tr>
-    </tbody>
-  </table>
-</section>
-
-<hr />
-
-<section>
-  <table>
-    <thead>
-      <tr>
-        <th class="rank">順位</th>
-        <th>チーム</th>
-        <th class="point">勝点</th>
-        {% for i in (1..detail.ranking.first.histories.size) %}
-        <th class="match">{{ i }}回戦</th>
-        {% endfor %}
-      </tr>
-    </thead>
-    <tbody>
-      {% for team in detail.ranking %}
-      <tr>
-        <th>{{ team.rank }}</th>
-        <td>{{ team.name }}</td>
-        <td>{{ team.point }}</td>
-        {% for match in team.histories %}
-        <td class="{{ match.result }}">
-          <div class="opponent">vs {{ match.opponent }}</div>
-        </td>
-        {% endfor %}
-      </tr>
-      {% endfor %}
-    </tbody>
-  </table>
-</section>
-
-<hr />
-
-<section>
-  <h3>関連記事</h3>
-  <ul>
-    {% for blog in detail.blogs %}
-    <li>
-      <h4>
-        <a href="{{ blog.url }}">{{ blog.title }}</a>
-      </h4>
-    </li>
-    {% endfor %}
-  </ul>
-</section>