Most pass plays involve an extra blocker; teams either keep the running back or tight end in to pass protect (or have him at least chip a defender while leaving for a route), or motion in a slotted tight end to help out. There are plenty of creative ways to protect the quarterback on pass plays, but empty protection is by far the riskiest.
That's why it's nice to tie empty protection in with a good route combination that will come open early, especially if the defense blitzes. The Y-Stick concept is popular among Air Raid and Pro Style offenses alike, and it's a perfect match with empty pro. Let's take a look at why this is so effective:
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| The video used in making these images is courtesy of ESPN. |
This count simply allows the offensive line to say, "Here are the five guys we're prioritizing in our protection." They're the most immediate threats, which is why the center (blocker #3) points out the will linebacker (defender #5) rather than the backer next to him. #5 is the innermost defender that isn't actually on the line, so he's the most dangerous of the two inside linebackers.
Here are the route combos on the play. I drew up all the routes to show the concept in full, but we're most concerned about the circled player, or the Y. For terminology purposes, the Y is a tight end (in this case he's flexed out). Some teams might call this guy an "A" rather than a Y, but that's a semantics discussion that doesn't really need to take place here.
As you can see, the cornerbacks are playing off their receivers; this means the defense could be playing man coverage or cover 4 zone, but the coverage hasn't really been tipped yet. However, they don't appear to be looking at the quarterback; rather, the corners and safeties seem focused on individual threats. This would indicate man coverage, but we can't be completely sure before the play starts.
This is called a "Y-Stick" concept because the circled Y is running a stick route. He's driving just past five yards, then making a speed break inside to face the quarterback while still moving towards the sideline. The Y-Stick and the release from the running back combine to work well with empty protection.
The quarterback's read is fairly simple. If the defense brings the house, throw the Y-stick immediately. If the Y is covered but there's still a considerable rush, throw the drag or dump the ball off to the running back. If the defense doesn't bring many rushers, wait for one of the developing routes to come open.
Just prior to the snap, the Will linebacker (who was #5 in the rush count) walks up to the line. This keeps him as a top-priority potential rusher. Had the Mike backer (the circled player) walked up instead, he would have replaced his cohort in the offensive line's presnap count.
However, the Mike's weight is pretty heavy on his toes; he definitely looks ready to blitz as well. The offensive line and the quarterback see this, but for now they're more concerned with the players in the yellow square.
The o-line doesn't have too many rules on this protection, except to block the first five rushers inside-out. This means inside rushers are a greater threat because they're closer to the quarterback. If a sixth rusher comes, the offensive line can't do anything; the quarterback has to recognize the extra rusher and throw to the (presumably) open receiver.
Here's the same play from an endzone angle right after the snap. The left tackle #59 recognizes that, in fact, both linebackers have decided to blitz. He leaves the defensive end that was lined up outside of him, because by the time that defensive end makes it to the quarterback the ball will be out.
The left guard (#73) and center (#57) are preparing to pass twisting pass rushers to each other. The rushers might have lined up in one gap, but by looping and changing their route to the quarterback, they hope to create confusion among the o-line and break one of their rushers free. #73 and #57 need to work together in order to ensure they both block the man who ends up in their respective areas.
Here is the play a split-second later, right before the quarterback makes his throw. The left side of the offensive line has done an admirable job adjusting to the blitz.
Since the defense ended up playing man coverage, the right defensive end dropped off to cover the running back. As a result, the right tackle (#70) is coming back inside to help. Pass protection is all about "bumping" your fellow offensive lineman off a player so that he can take someone else. #70 is hoping to bump the right guard (#64) off to the blitzing linebacker.
Meanwhile, the left tackle (#59) and left guard (#73) picked up the twisting players and allowed the outermost rusher to come unblocked, since he won't get to the quarterback before the ball is out. The center (#53) is passing off a defensive lineman to #73, then getting ready to pick up the late blitzing backer.
In a perfect world, everyone on the o-line would have ended up taking the man to his left; however, this is still a very good empty pass pro adjustment. #70 had no way of knowing the defensive end would drop in coverage, and in a quick passing situation the offensive line would rather block the man to the Y-Stick side so he can't jump up to bat the ball down.
Before any blitzers can arrive, the ball is already out. This is an excellent play to accommodate the blitz, because it gives the quarterback plenty of quick options without having to keep an extra player in protection. His first two choices here would be the Y-Stick and the drag coming from the left slot player, with the running back's free release established as a third choice checkdown route.
Since the defense had a man blitz on, throwing the Y-stick is an obvious decision. The defender manned up on the Y was a safety; as you can see in the above image, he's five yards away, allowing the receiver to get a first down.
Empty protection is perfect for quick passing concepts like the Y-stick, since it gives the quarterback a couple of seconds while allowing for more passing options. However, the offensive line's empty protection needs to be as good as Houston's on this specific play. The unit must be saavy enough to read pre-play keys, then react to twists and late blitzes. If the o-line is capable, this protection/route concept is a great addition to any offense.
