Essentially, it is a drop back and release for the lineman where they let their assignment have a free rush at the quarterback and they run down field to block. I think many miss what actually makes these things work, though. <div>
</div><div>You have to catch the defense in the right scheme. You have to have a pretty good idea when they are blitzing and where they are blitzing from. If you try to run a screen and you have 2 or 3 linebackers back in coverage or a couple of linebackers and a defensive lineman zone blitzing, you might as well pack your lunch and call it a day because it ain't gonna work. No way an average lineman is going to effectively match up on a good linebacker. </div><div>
</div><div>Another key is deception. You have to sell the defense on a pass play while they are blitzing and get them to commit to going after the quarterback. As with catching them in the blitz, the key is the space in the second level. If you have a tight end or RB release and start working the zone and there are 3 people directly above him waiting on the screen, you think that screen is gonna gain 5+ yards? Hell no... even if lineman get downfield to block, no way you can possibly account for every defensive player working the zone. At best, you get a yard or two. </div><div>
</div><div>That's the thing we have been running into this year. Teams KNOW Relf is gonna run the ball on them. Screens don't work against run defense because they are keying in on your RB, anyway. They also don't work when defenses are only needing to bring 4 lineman to get adequate pressure on the QB. Those are the issues we are running into. We have run several slip screens to the outside, but not many screens over the top of the line for that very reason. </div>