QB Assignment: QB puts the proper A-Back in jet motion. QB and A-Back then go into a quick mesh. The QB’s one-way thought process at this point is as follows: I will GIVE the ball to the jet back every time, UNLESS that jet-key defender (shown in BOX) comes up field and takes the A-Back. If he does come up to take the A-Back, the QB then “replaces the read” and attacks the vacant spot left by the unblocked jet-key defender