After winning at Koshien, he was given the title of "best right-handed pitcher".
He received the title of "best right-handed pitcher" after winning the The National High School Baseball Championship of Japan.
「甲子園で優勝することで、ナンバー1右腕の称号を得る。」= After winning at Koshien, he was given the title of "best right-handed pitcher"./ He received the title of "best right-handed pitcher" after winning the The National High School Baseball Championship of Japan.
ボキャブラリー
win = 優勝する
given the title = 称号を得る
best right-handed pitcher = ナンバー1右腕
receive = 得る
The National High School Baseball Championship of Japan = 全国高等学校野球選手権大会