"the ball is in one's court"の定義と意味

What is the origin of the idiom "the ball is in one's court" and when to use it?

The idiom "the ball is in one's court" has its origin in the world of sports, particularly in games like tennis and racquet sports. In these games, players take turns hitting a ball back and forth over a net. When the ball is in one player's court, it means it is their turn to make a move or take action. Figuratively, this expression is used to convey that someone is responsible for making a decision or taking action in a particular situation, and it implies that it is now their turn to respond or make their move.