投手

1. Origins, structure, and basic meaning

• Structure: 投手 is read とうしゅ and means the pitcher who throws the ball in baseball.
• Basic usage: It appears when one pitcher throws through the end and when a manager sends in another pitcher.

2. Common pitfalls and similar expressions

• Pitching through the end
  • 投手が最後まで投げ切った indicates that one pitcher pitched through the end.
• Sending in a pitcher
  • 投手を出した describes the manager sending a pitcher into the game.