I define a defensive impact play as a pressure, a tackle, a pass-batted-down (PBU or PD) or a forced fumble. A pressure can be a QB hurry, a QB hit or a sack. A hurry is when a defender forces the QB to throw because he is close. A hurry does not involve and is not a QB hit. A hurry is pressure, but it is not a QB hit. A QB hit is when the defender hits the QB right after (or while) he is throwing the ball. A QB hit is a pressure, but it is not a hurry.