noun
Baseball term for a substitute batter. Also used figuratively for a person who steps in to replace someone in a task or role.
九回裏、代打者にベテラン選手が送られた。
In the bottom of the ninth, a veteran player was sent in as a pinch hitter.
彼は交渉の場で代打者として呼
He was called in as a pinch hitter at the negotiation.