Playbooks

Scat is a four-verticals style dropback concept out of Shotgun Split Close with 20 personnel. Both outside receivers run vertical seam routes up the sideline, the slot receiver runs a deep vertical up the numbers, and the inside receiver runs a quick out breaking to the flat while the running back releases into an angle route in the backfield. This is a man beater designed to stretch the field vertically and attack leverage on outside cornerbacks, with the primary read progression starting on the deep outside vertical routes before working down to the flat out route and check to the backfield angle route as the underneath outlet.
Read the safety alignment before the snap, since a single high safety cannot cover three vertical threats and will be forced to choose which seam to help on. Watch the cornerbacks at the snap, because if they open their hips to run with the outside verticals it confirms man coverage and tells you to trust the sideline shots. Key any user-controlled defender sitting in the deep middle third, as this is the primary lurk threat that can jump the inside vertical or undercut the flat out route. Look for linebackers dropping into hook zones post-snap, since a well-timed blitz or aggressive zone drop on the underneath routes can force a quick checkdown to the backfield angle route. Cover 2 with two deep safeties splitting the field is the toughest shell against this play because it takes away the seams and forces you to live underneath.
Use Scat on early downs or obvious passing situations where you need to test single high safety looks and press man coverage on the outside. Pre-snap, identify whether the defense is showing two deep safeties or a single high shell, since Cover 1 and Cover 3 with man principles on the outside are the most vulnerable to the vertical stretch. Hot route the flat out receiver into a deeper option route if you see zone coverage sinking underneath, and consider motioning the backfield receiver to check blitz packages before the snap. Pair this play with Mesh or Mesh Spot in your play-calling sequence to keep the defense guessing between vertical shots and quick underneath separation concepts. This works best on second or third and long when defenders are more likely to play deep zone drops that create seams for the verticals.