Playbooks

SS 2 Trap is a zone coverage call out of the Odd Leo 4-3 Base 5-2 front that shows a Cover 2 shell with trap coverage principles underneath. Both cornerbacks sink into deep zone drops toward the sideline while the strong safety and weak safety carry over the top, and the underside shows a defender squatting outside with a shallow trap zone to jump quick outs and hitches. The five box defenders (three down linemen and two linebackers shown with red arrows) spill downhill to fit the run or rush the passer, making this primarily a zone beater designed to bait quick game throws into the trap defender while keeping two deep safeties over the top against verticals. Primary read progression for the defense is jumping any flat or out route first with the trap defender, then working coverage rules to the deep half safeties on anything that breaks vertical.
Watch the numbers and splits of the outside receivers before the snap, since a wide alignment signals the offense wants to work the flat or quick out where the trap defender is sitting. Read the two deep safeties post-snap first, confirming they are both getting depth into their deep halves rather than rotating down, which tells you the shell is holding true Cover 2 rather than switching to man. This call is vulnerable to double moves and deep out and up combinations that attack the seam between the trap defender and the deep half safety, so look for offenses stacking or motioning a receiver into that window. It shuts down quick game and shallow crossers because the trap defender is sitting in the exact passing lane those routes need, so if the quarterback holds the ball against those concepts you are winning the rep. Watch for play-action or RPO looks that hold your five box defenders on run fits, since a delayed release from the backfield can slip past the trap defender before he reads pass.
Use this call on early downs or third and short when you expect quick game concepts like flats, outs, and hitches from the offense, since the trap defender is designed to sit on those routes and bait a throw. Pre-snap, identify if the offense is running a bunch or stack look to the trap side, because those formations are more likely to expose the shallow trap defender if the routes convert into option routes. Key the quarterback eyes and hot route the trap defender underneath a quick out if you see 3 by 1 sets that stress the flat, since the base drop leaves a slight window before the trap defender squats. Pair this with Tampa 2 in your play-calling sequence so the offense cannot distinguish between straight Cover 2 drops and trap coverage until after the snap, keeping the quarterback guessing on the sideline throws. Save this for second and medium to long situations where a quick underneath completion is only a minor win for the offense, since the deep safeties keep you protected against explosive plays over the top.