Playbooks
Curls out of Shotgun 4wr Pack Trips is a zone beater built around four curl routes that settle in the soft spots between underneath and deep zone defenders. The trips side creates a natural triangle read where the outside curl, slot curl, and inner curl stack zone landmarks at different depths, forcing linebackers and safeties to choose who they sink to cover. The primary read progression starts with the trips side curl-flat combo, working outside in from the boundary curl to the slot curl before checking the backside single curl as a hot route bail out against zone drops.
Pre-snap, check corner depth on the trips side since press or tight man alignment signals man coverage that can jump the curl breaks if you sit too long. Identify the middle linebacker's depth and shade, because a linebacker sinking hard into the curl window at the sticks is the biggest threat to this concept and often signals zone match or Cover 3 sink technique. Watch for a user-controlled defender lurking in the shallow-to-intermediate throwing lanes on the trips side, since a smart user will jump the inside curl route and bait a pick six. Blitz packages that bring five or six rushers with man coverage behind them can disrupt timing before curls settle, so identify hot blitz cues like walked-up slot corners or overloaded fronts pre-snap. Cover 2 shells with two deep safeties and aggressive underneath zone drops can clog every curl window simultaneously, making the backside single receiver route the only real answer against that shell.
Use pre-snap motion or a shift on the trips side to see if the defense rotates a linebacker or safety to match numbers, which reveals zone versus man intent immediately.
Look for Cover 3 or Cover 4 shells with off-coverage corners, since soft cushions on the outside curls give you easy completions at the sticks on third and medium.
Hot route the backside single receiver into a deeper dig or comeback if you expect a heavy roll to the trips side, since that leaves the backside one-on-one against a single defender.
Pair Curls with Four Verticals in the same set so defenses that sink hard into curl windows get burned over the top on the next snap, keeping linebackers honest.
Best called on second or third and medium to long since the sit routes naturally settle at first down markers and give the quarterback a high floor rhythm throw.