Playbooks

Breakdown

HB Power O Alert Bubble is a gap scheme run play out of Singleback Doubles with an alert tag that gives the offense a pre-snap bubble screen option to the slot receiver. The base play pulls the backside guard through the hole with down blocks up front, sending the HB downhill through the point of attack for a gap-and-seal power run. The diagram shows the outside receiver running a shallow comeback/drag as a clear-out route while the slot defender's bubble alert is the built-in answer if the box is loaded, making this a run-first play with a numbers-based screen alert rather than a true RPO or man/zone beater.

Defensive Reads

Pre-snap, count the box defenders and identify if the defense is in a run-heavy front like a 4-3 Under or 46 look, which signals the power should hit downhill. Key the slot cornerback's depth and leverage since a tight, aggressive alignment on the slot receiver telegraphs man coverage and makes the bubble alert less effective. Post-snap, watch the play side linebacker's fill technique because a linebacker who reads pulling guard quickly and fits the hole hard will blow up the power lane. If the defense shows a two high safety shell with light box numbers, expect the offense to alert the bubble screen rather than commit to the interior run. Look for user-controlled defenders flowing hard to the play side pre-snap, as this often means the defense is jumping the power run tendency and leaving the bubble screen wide open on the backside.

Usage Tips

Check the box count before the snap and if the defense has six or more defenders stacked inside, alert the bubble to the slot for a numbers advantage on the perimeter.

Use this play on early downs, especially first and second and short to medium, to keep the defense honest against your play-action shots from the same Doubles personnel.

If the corner is playing off or shaded inside on the slot receiver, hot route the bubble receiver to attack the open grass instead of forcing the power run into a stacked front.

Pair this with HB Power O and PA Power O from the same set so the defense has to respect both the gap run and the play-action off it, setting up bigger shots downfield later in the series.

Watch for a nano blitz or an extra defender crashing the point of attack post-snap, since the pulling guard needs a clean lane for the power to hit for positive yardage.

Other Plays in Doubles