A double play is a defensive move in baseball where the fielding team gets two runners out with one continuous action. It happens when fielders catch or field the ball and quickly throw it to get one runner out, then immediately throw to another base to get a second runner out, all before the play ends.

The most common double play starts when a batter hits a ground ball with a runner already on first base. The shortstop or second baseman fields the ball, throws to second base to get the runner out, and then the second baseman instantly throws to first base to get the batter out too. The whole sequence takes only a few seconds and requires perfect timing and coordination.

Double plays are valuable because they quickly shut down a team's scoring opportunity. With runners on base and fewer than two outs, a team might be ready to score runs. But one sharply hit ground ball and two quick throws can end the inning instantly, leaving those runners stranded. When a team pulls off a smooth double play, the crowd usually roars with excitement at the defensive skill and speed they've just witnessed.