The emergency five infielder defense

The need for this defense occurs every now and then during a season. What is it and when should it be used?

The only time this defense should be employed(in a non bunt situation) is when you are on the road and the winning run gets to 3B. In this scenario, if the runner on 3B scores- GAME OVER!

Therefore, often times teams will bring a fifth infielder into the infield from the outfield. Or, they will pull an infielder off the bench and pull an outfielder from the game.

The idea is rather simple. If the ball gets through to the outfield on the ground the game is over. Put a fifth infielder in the game to prevent that. Also, if the ball is hit into the air deeply it doesn't matter how many outfielders you have so you might as well rearrange your players to improve your chances at prolonging the game.

A prudent idea with outfielders is to have your two fleetest outfielders in the outfield to try and rundown all potential balls that might fall. Arm strength isn't an issue if the ball isn't first caught.