Playbooks
Quick Reference
Breakdown
HB Zone Wk Alert Bubble is an inside zone run play out of Singleback Y Trips with an alert audible to a bubble screen if the read pre-snap dictates. The diagram shows the offensive line stepping in unison for a weak side zone track, the HB taking a downhill angle behind the line, the inside trips receiver running a vertical seam to occupy the deep defender, and the outside trips receiver working a quick hitch into a bubble route behind the slot man who arc releases to lead block. This is a run play at its core with a built in alert bubble screen changeup, making it a strong run or pass hybrid call against overloaded fronts. The primary read progression is pre-snap: identify weak side box numbers and alley defenders first, then either hand it off on the zone track or alert the bubble to attack space if the defense sells out to stop the run.
Defensive Reads
Watch the weak side defensive end and outside linebacker alignment pre-snap, if they are crashing hard inside to stop zone the bubble alert exploits the vacated flat immediately. Key the flat defender or slot cornerback depth, if he is playing tight man coverage on the bubble receiver the run track is the better choice since the alley will be softer. Identify the strong safety rotation post-snap, if he flows hard to the run action late the play action shot variants in this set become deadly on subsequent calls. Look for user controlled defenders spying the HB or crashing the mesh point, this indicates the defense expects the handoff and the bubble alert should be triggered before the snap. Cover 2 and cover 4 shells with linebackers sitting at depth tend to shut down both the zone run lanes and the bubble space, in that case checking to a different concept in the playbook is smarter than forcing this call.
Usage Tips
Use pre-snap alert hot routes to send the bubble if you see the defense stacking the box with six or more defenders, this turns a losing run look into an instant numbers advantage screen.
Check the weak side linebacker depth before the snap, if he is crashing hard downhill on run fits you have a green light to alert the bubble instead of handing off.
This play shines on early downs like first and ten or second and short when defenses are guessing between run and pass, keep them honest by mixing in HB Dive and HB Stretch from the same personnel look.
Pair this call with PA Zone Shot or PA Read from Singleback Y Trips to sell the same zone action while attacking downfield once defenders start flying up to stop the run fits.
Against man coverage keep it as inside zone and trust your zone blocking scheme, against soft zone shells or cover 3 with cheating corners alert the bubble for a free access throw to the flat.
