Playbooks

Buck Sweep Read Opt lines up in Shotgun out of the Wing Slot Wk formation with 12 personnel, giving you two tight ends on the field for extra blocking surface. The diagram shows the QB reading the playside end or first threat off the edge while the HB runs the sweep path behind pulling linemen, with the green arrow marking the QB keep read and the red arrow showing the give path to the sweep. This is a run-first read option play, not a pass concept, and the primary read progression is simple: the QB reads the edge defender, gives on the sweep if he crashes down inside, and pulls it to keep outside if that defender stays wide to take away the HB.
Key the playside defensive end or edge defender first since he is the direct read for the QB give or keep decision on this play. Watch for user-controlled defenders flying downhill on the mesh point, as a disciplined user read defender can blow up both options if he stays patient and doesn't commit early. Against Cover 3 or Cover 1 shells with the safety rotated away from the sweep side, this play hits hard because the extra gap defender is removed from the edge. If the defense shows an overload blitz or edge pressure package pre-snap, expect the read defender to be replaced by a blitzer, which can speed up the QB decision and create a negative play if he doesn't get the ball out quickly. Look for linebackers flowing hard to the sweep side post-snap, since a QB keep read into the vacated backside gap can turn into an explosive gain if the second level over pursues.
Use pre-snap motion or a quick glance at the defensive end and outside linebacker alignment to predict the read before the snap, since a wide 9-technique end usually signals a keep read while a crashing end signals the give.
Call this out of 12 personnel on early downs when you want to establish gap integrity issues, then follow it up with Mtn Buck Sweep or RPO Buck Sweep Peek to keep the same run action but adjust the constraint.
Against fast-flow linebackers who key the mesh point, pair this with Power Read or Read Option to force the defense to respect multiple gap schemes out of the same personnel and formation look.
If the defense shows a heavy box with 8 in the box pre-snap, check to RPO Peek Slant or RPO Glance Post from the same set to punish the numbers advantage in the passing game instead of forcing the run.
On the QB keep, get your eyes upfield immediately and look to set up a pitch or cutback since the edge defender who was read has already been beaten to the outside.