Playbooks

RNS Switch Curl is a route combo out of Shotgun Flanker Close (10 personnel) that features a switch release on the left side, where the two receivers cross paths at the line before one breaks outward on a quick out and the other bends into a corner route. On the right side, the outside receiver runs a deep vertical to clear space while the inside receiver settles into a curl at intermediate depth, and the backfield player releases into the flat to occupy underneath defenders. This is a zone beater built around the switch release confusing man defenders on the crossing routes while the curl and flat combo on the right creates a natural high low stretch on any zone defender sitting underneath. The primary read progression starts with the switch concept on the left if the defense shows man coverage, then works to the curl flat combo on the right, using the flat route to hold linebackers and open the curl window.
Pre snap, identify the strong safety depth and cornerback alignment on the switch release side, since press man or tight alignment signals a blitz or man scheme you can attack with the rub. Post snap, key the flat defender's first two steps, if he sinks with the curl route the flat is open, if he jumps the flat the curl route settles into the window behind him. Watch for a user controlled linebacker sitting in a lurk technique underneath the curl, since aggressive user play can jump this route and turn it into a pick six if you force it late. Zone blitzes with a linebacker dropping into the curl zone while a corner blitzes off the edge will disrupt timing, so identify overload fronts pre snap and be ready to check to the flat quickly. Cover 2 shells with deep half safeties will squeeze the vertical clear out route on the right, so if the safety stays deep and the corner sinks under the curl, look to the switch release side for a bigger throwing window.
Check pre snap for single high versus two high safety alignment, since this play thrives against zone shells like Cover 3 and Cover 4 where the curl flat combo exploits the flat defender's conflict.
If you see man coverage across the board, prioritize the switch release side, since the rub created by the crossing routes forces defenders to fight through traffic and creates natural separation.
Use the flat route as your checkdown against blitz heavy looks, especially on early downs when you just need to reset the chains or bait a linebacker into a bad rep.
Pair this play with RNS Switch Curl Flat or RNS Switch Dig in the same set to keep defenders guessing, since the switch release look is identical pre snap but the depth and angle of the breaking routes change.
Best called on second or third and medium situations where the curl route sits at a marker depth that consistently gets you a fresh set of downs against zone drops.












