ワンポイントリリーフ

noun

relief pitcher brought in to face one batter

Baseball term for a relief pitcher who enters the game specifically to face a single batter, often to exploit a lefty-lefty or righty-righty matchup.

wasei-eigo (Japanese-coined English), from one-point relief

• 監かん督とくは左ひだり打だ者しゃを抑おさえるためにワンポイントリリーフを送おくった。

  The manager sent in a one-point relief pitcher to get the left-handed batter out.