As a fielder, sometimes you will be presented with a rare opportunity to make multiple outs on the same play. Since half-innings only require three (3) outs to be made before teams switch roles on the field, fielders can get at most three (3) outs on the same play.
A double play occurs when two (2) runners are put out in the same play. They typically occur after ground balls. An infielder will field the ground ball, then step on a base that a runner is approaching or throw it to another fielder who is at a base a runner is approaching. The fielder will then throw the ball to another fielder whose base has a runner approaching it.
The most typical and well-known double play occurs with a runner on first base and the batter hitting a ground ball to the shortstop. The shortstop fields the ground ball, then tosses it to the second baseman, who steps on second base to get the runner who was previously on first base, out. The second baseman will then throw the baseball to the first baseman, who will then step on first base to put the batter-runner out. Both of these outs are force outs.
A triple play occurs when three (3) runners are put out in the same play. This is even more rare than a double play. Like a double play, triple plays usually happen when the bases are loaded and a ground ball is hit relatively close to a baseman. This gives the baseman time to throw to another baseman and finally another baseman for a third out.