relief pitcher

Noun

(baseball) A pitcher who enters the game after the starting pitcher or another relief pitcher is removed due to injury, ineffectiveness, ejection from the game or fatigue.

Japanese Meaning

救援投手：試合開始の先発投手や他の控え投手が負傷、不振、退場、疲労などの理由で交代した後に登板する投手。

What is this buttons?

Google Translation / DeepL Translation

先発投手の腕に張りが出た七回、監督はラリーを止めるために救援投手を起用した。

Details

Sense（1）

(baseball) A pitcher who enters the game after the starting pitcher or another relief pitcher is removed due to injury, ineffectiveness, ejection from the game or fatigue.