Playbooks
Likely unavailable in the playbook builder
Quick Reference
Not in any team playbook.
Breakdown
RPO Alert Bubble is a run pass option out of Shotgun Ace Slot Offset with 12 personnel that pairs an inside zone run with a bubble screen read to the slot. The diagram shows the running back taking a jab step and bending outside on the zone track behind the offensive line, while the slot receiver sits underneath on a quick bubble route as the read key. This is a numbers based RPO, not a straight man or zone beater: the QB reads the flat defender or slot cornerback to decide whether to hand off the zone run or pull and throw the bubble, with the run as the initial and default progression.
Defensive Reads
Pre-snap, count defenders in the box versus offensive blockers, a light box (six or fewer) favors the inside zone hand off. Identify the slot cornerback or overhang defender's depth and leverage, if he is playing tight to the line of scrimmage he is likely keying run and vulnerable to the bubble. Post snap, watch for a user controlled defender flying downhill on the zone run fake, that is the signal to throw the bubble behind him for an easy gain. Zone coverage shells like Cover 3 or Cover 4 with a hard flat drop from the corner can shut down the bubble read, forcing the offense into the run. Man coverage with an aggressive slot corner jumping the bubble route pre-snap can bait the QB into a bad give read, so watch blitz packages and nano blitz designs that disguise the overhang defender's assignment until the snap.
Usage Tips
Check the box count to the bubble side before the snap, if the defense has fewer defenders than blockers plus receiver in that flat you have an automatic bubble throw.
Use your alert key (usually the slot corner or overhang linebacker) post snap to decide run versus throw, if he crashes down on the run track pull and fire the bubble immediately.
This play pairs well with Inside Zone and RPO Zone Alert Bubble in the same set, run all three from identical formation and personnel to keep defenders honest and force late reads from linebackers.
Best used on early downs (1st and 10, 2nd and short) where defenses are more likely to sell out against the run with light boxes.
Against aggressive blitz teams, snap the ball quickly to the bubble side before extra rushers can get home, since the RPO conflict punishes downhill linebackers and slot corners who bite on run action.
