第90回選抜高校野球大会2018(春の甲子園)

第90回を迎える選抜高校野球大会。
各地域から計28校が選抜され、明治神宮大会優勝枠1校、21世紀枠3校合計32校によりトーナメント方式で優勝校が決まります。
準々決勝からは再抽選がおこなわれ再度組み合わせが決まります。
組み合わせ・結果
1回戦
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 聖光学院 (福島) |
1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 5 |
| 東筑 (福岡) |
2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 国学院栃木 (栃木) |
1 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| 英明 (香川) |
0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 明秀日立 (茨城) |
0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 2 | 4 |
| 瀬戸内 (広島) |
1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 3 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 由利工業 (秋田) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 日大三 (東京) |
0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | × | 5 |
2回戦
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 駒大苫小牧 (北海道) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 静岡 (静岡) |
0 | 0 | 3 | 0 | 3 | 1 | 0 | 0 | × | 7 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 膳所 (滋賀) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 日本航空石川 (石川) |
0 | 0 | 0 | 2 | 0 | 2 | 1 | 5 | × | 10 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 中央学院 (千葉) |
0 | 0 | 0 | 1 | 0 | 0 | 0 | 4 | 0 | 5 |
| 明徳義塾 (高知) |
3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3× | 10 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 智辯和歌山 (和歌山) |
0 | 0 | 1 | 1 | 0 | 0 | 0 | 2 | 0 | 4 |
| 富山商業 (富山) |
0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 日大山形 (山形) |
0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 3 |
| 智辯学園 (奈良) |
0 | 0 | 0 | 1 | 0 | 2 | 1 | 1 | × | 5 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 下関国際 (山口) |
0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 創成館 (長崎) |
2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | × | 3 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 伊万里 (佐賀) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
| 大阪桐蔭 (大阪) |
5 | 3 | 0 | 4 | 0 | 1 | 1 | 0 | × | 14 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 東邦 (愛知) |
0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 3 |
| 花巻東 (岩手) |
1 | 0 | 0 | 2 | 0 | 0 | 1 | 1 | × | 5 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 聖光学院 (福島) |
1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
| 東海大相模 (神奈川) |
6 | 3 | 0 | 1 | 0 | 1 | 0 | 1 | × | 12 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 国学院栃木 (栃木) |
1 | 0 | 0 | 0 | 4 | 2 | 0 | 2 | 0 | 9 |
| 延岡学園 (宮崎) |
3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 5 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 高知 (高知) |
0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 |
| 明秀日立 (茨城) |
3 | 2 | 0 | 0 | 2 | 0 | 0 | 3 | × | 10 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 彦根東 (滋賀) |
0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 4 |
| 慶応 (神奈川) |
0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 3 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 乙訓 (京都) |
0 | 1 | 0 | 0 | 1 | 4 | 0 | 0 | 1 | 7 |
| おかやま山陽 (岡山) |
2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 松山聖陵 (愛媛) |
0 | 1 | 0 | 1 | 0 | 0 | 2 | 0 | 1 | 5 |
| 近江 (滋賀) |
0 | 5 | 1 | 1 | 0 | 1 | 0 | 0 | × | 8 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 富島 (宮崎) |
0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 星稜 (石川) |
1 | 0 | 7 | 2 | 0 | 0 | 0 | 1 | × | 11 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 日大三 (東京) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 三重 (三重) |
0 | 0 | 0 | 0 | 0 | 3 | 5 | 0 | × | 8 |
3回戦
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 東海大相模 (神奈川) |
0 | 2 | 0 | 2 | 0 | 0 | 0 | 3 | 1 | 8 |
| 静岡 (静岡) |
0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 明徳義塾 (高知) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| 日本航空石川 (石川) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3× | 8 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 国学院栃木 (栃木) |
0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 4 |
| 智辯和歌山 (和歌山) |
4 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | × | 7 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 計 | |
| 智辯学園 (奈良) |
0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 創成館 (長崎) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1× | 2 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 明秀日立 (茨城) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 大阪桐蔭 (大阪) |
0 | 0 | 1 | 0 | 1 | 0 | 1 | 2 | × | 5 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 計 | |
| 彦根東 (滋賀) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 花巻東 (岩手) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1× | 1 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 乙訓 (京都) |
0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 三重 (三重) |
1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | × | 2 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 計 | |
| 近江 (滋賀) |
2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 3 |
| 星稜 (石川) |
0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 1× | 4 |
準々決勝
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 日本航空石川 (石川) |
0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 |
| 東海大相模 (神奈川) |
1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | × | 3 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 計 | |
| 創成館 (長崎) |
3 | 0 | 1 | 1 | 2 | 0 | 2 | 0 | 0 | 1 | 10 |
| 智辯和歌山 (和歌山) |
0 | 1 | 1 | 0 | 4 | 0 | 1 | 2 | 2 | 2× | 11 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 花巻東 (岩手) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 大阪桐蔭 (大阪) |
4 | 5 | 0 | 2 | 3 | 0 | 2 | 3 | × | 19 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 三重 (三重) |
0 | 3 | 4 | 0 | 0 | 0 | 2 | 0 | 5 | 14 |
| 星稜 (石川) |
0 | 2 | 2 | 0 | 0 | 1 | 1 | 3 | 0 | 9 |
準決勝
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 計 | |
| 智辯和歌山 (和歌山) |
0 | 0 | 2 | 3 | 0 | 0 | 1 | 4 | 0 | 2 | 12 |
| 東海大相模 (神奈川)) |
4 | 0 | 0 | 0 | 2 | 4 | 0 | 0 | 0 | 0 | 10 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 計 | |
| 三重 (三重) |
0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 大阪桐蔭 (大阪)) |
0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1× | 3 |
決勝
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 計 | |
| 智辯和歌山 (和歌山) |
0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 |
| 大阪桐蔭 (大阪) |
0 | 0 | 0 | 2 | 0 | 0 | 1 | 2 | × | 5 |
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