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Slants out of Strong I Y Open Flex (21 personnel) shows a double slant concept from the two receivers to the boundary side, with the outside receiver running a shallow crossing slant underneath and the inside receiver working a deeper slant into the void behind it. On the strong side, the TE runs a deep corner-ish crossing route (red) that breaks back across the field toward the opposite hash, while the flanker to that side releases outside and up the seam before curling back to sit at the top of the route stem. The HB stays in to help protect out of the backfield before leaking out into the flat as a checkdown. This is a man beater concept: the stacked slants create natural picks against man coverage while the TE crosser is designed to work away from man leverage. Primary read progression goes slant to slant, checking the shallow slant first against off coverage or blitz, then working to the deeper slant and TE crosser, with the HB flat route as the last resort checkdown.
Pre-snap, check safety depth and cornerback press alignment: press man corners on the slant side signal a strong test for the pick concept, while soft corners suggest the defense wants to squeeze the shallow slant. Watch linebacker depth at the snap, since shallow linebackers who fast flow to the strong side TE crosser open up the backside slant window immediately. Identify Cover 3 buzz or Tampa 2 shells post-snap by tracking the middle linebacker's drop, because a hard drop into the deep middle can undercut the TE crosser and force the quick check to the shallow slant. Watch for a user-controlled defender spying the TE crosser or robbing the shallow slant lane, which is the primary threat to this concept and should trigger an immediate progression to the HB checkdown. Against man blitz looks, identify if the slot defender chases across the formation on the pick route, since a defender fighting through the traffic late means the deeper slant will come open in the vacated area.
Use pre-snap motion with the flanker to identify man versus zone before the snap, since a defender following the motion confirms man coverage and tells you the slants will have room to work.
Against Cover 3 or Cover 4 zone shells, prioritize the TE crosser since it settles in the soft spot between underneath zone defenders and the deep third.
Hot route the backside receiver into a quick slant or drag if the offense faces a heavy blitz look, since the natural pick concept from the two slants clears space fast against man pressure.
Pair this play with HB Dive or Inside Zone from the same set to keep linebackers honest, then come back to Slants once you see linebackers sitting on run fits and creeping into the box.
Best used on early downs or third and short to medium, since the quick-hitting slants get the ball out before a user blitzer can close, and the levels concept punishes both man and zone if the defense guesses wrong.