When coaching baseball it is important to establish who takes a pop up? This play can lead to embarrassment or worse, serious injury. The basic key is that the player who lines up the greatest distance from the plate takes charge and handles the play. For example the 3rd baseman lines up farther from the plate than the catcher, so when he feels he can catch the ball he should shout, ball, ball, ball to let everyone know he has the play. Others around the point where the balls coming down should shout take it, take it, take it, to let him know he’s safe to make the play. The drill linked here is an example from the iBook, Practice Baseball to Win.