Playbooks

Spacing out of Shotgun Bunch Open sends the three bunch receivers on a horizontal stretch to one side, with routes settling into shallow, mid-level, and deeper hitch or curl spots to layer the underneath and intermediate zones, while the backside X runs a deep comeback that sits down against off coverage. This is a classic zone beater built to attack Cover 3 and Cover 4 by putting multiple receivers on the same level, forcing a single underneath defender to choose who to cover. The primary read progression starts backside with the comeback route against a soft corner, then works to the bunch side reading low to high through the shallow, then the curl, then the deepest sit route.
Watch the depth of the underneath zone defenders at the snap, since Spacing is designed to force one linebacker or nickel defender to cover multiple horizontal routes at three different levels. Key the backside cornerback alignment before the snap, if he is playing soft off coverage the comeback route will be open quickly and he needs to press or sink hard to disrupt the throw. This concept struggles against man coverage and especially against Cover 1 or Cover 0 with no natural rub created by the bunch alignment, so aggressive man press with a spy or blitz behind it can shut this down. Look for a user-controlled defender lurking underneath in the bunch flat area, since a sim AI or user spy sitting in that shallow zone window can jump the low route and bait the quarterback into a turnover. Post-snap, track linebacker zone drops to the trips side, if the defense rotates two defenders into the same horizontal window instead of spreading levels, the deep sit route by the third bunch receiver becomes the automatic answer.
Pre-snap, identify whether the defense is showing a three-deep or four-deep shell since this concept is built specifically to exploit the soft spots in Cover 3 and Cover 4 zone drops.
If the corner over the backside X is playing off at the snap, take the comeback route first since it is the fastest way to move the chains against zone.
Use motion or a quick glance at linebacker depth to confirm zone versus man, and if you see man coverage, be ready to check into a different concept since Spacing loses value against tight man technique with no natural rub.
Hot route the shallow bunch receiver into a quick out or speed out if you are getting immediate outside pressure off the edge, since it gives you a fast answer against blitz looks.
Pair this play with Bunch Levels or Bunch Flood in your play-calling sequence so you can show the same bunch alignment and formation, keeping the defense guessing between horizontal zone stretches and vertical stretches while forcing zone defenders to widen and open running lanes for HB Draw or Inside Zone later in the series.