ヘッドアップ

noun, noun or participle which takes 'suru'

lifting the head while hitting the ball

A wasei-eigo sports term, especially in baseball and golf, for the mistake of looking up too early during a swing, causing a mishit.

wasei-eigo (Japanese-coined English), from head up

• ヘッドアップしてボールをちゃんと見みていなかったから、空から振ぶりした。

  I swung and missed because I lifted my head and didn't watch the ball properly.