On illustrating the do-dad, or the area block as it is sometimes called, we will talk about just the offensive center, the offensive left guard in this case, the offensive left tackle and the halfback. The guard and the center do-dad or area block the defensive tackle and the middle linebacker. Do-dad blocking is used against stunting lines or lines that stack one defensive lineman behind the other. In the case where the defensive tackle has an outside charge and the middle linebacker is keying the fullback and has the outside responsibility, the middle linebacker will, with the snap of the ball, move immediately to the hole, making it impossible for the offensive center to cut him down because of the middle linebacker's key on the fullback. In this case we will use do-dad blocking.
The center is the lead blocker - the apex. He will lead-step, the same technique as the down block, for the crotch of the defensive tackle. The offensive guard, using the same technique as he does in the drive block, will aim for the point which is outside the hip of the defensive tackle. If the defensive tackle has an inside charge, the guard immediately releases the tackle, picking up the middle linebacker who would be moving with the key of the fullback toward the hole. The center, since the tackle is moving into him, would pick him off.
