Checked swing

A checked swing is a type of motion in baseball made by a batter. A checked swing occurs when a batter starts to swing his bat at the ball, but stops the swing in order to allow the ball to pass without hitting it. If the swing was indeed checked, so that there was actually no swing, then if the bat did not touch the ball and if the ball did not go through the strike zone, the pitch counts as a ball; but in that circumstance if the swing was not checked, so that a swing actually occurred, then the pitch counts as a strike.