Duo

The Duo tag identifies downhill gap/man run concepts where the double team at the point of attack and vertical displacement of the defensive line create a one-on-one between the back and the play side linebacker. Across 6 formations and 39 sets (from Maryland I and Strong I heavy looks to Shotgun Duo Slot Open and Pistol Bunch), the 49 tagged plays give you the same blocking rules out of drastically different personnel and pre-snap pictures, including RPO-style variants like 26 Duo Alert Bubble and 26 Duo Alert X Lookie. Competitive players use this tag to pull every Duo run in the game at once, stacking the concept behind matching passing looks so heavy-run schemes stay tendency neutral without relearning reads.