Rules to play Baseball
Get multiple runners out at once
When the field is set up just right, the fielders may be able to pull off a double play or even a triple play, in which they get two or three outs on a single play. Triple plays are rare, but possible if enough force outs are available. Double plays are more common, and often involve forcing out a runner on first, and then grounding out the batter before he or she reaches first.
Since three outs causes the teams to switch, a triple play will end the current half of the inning immediately.