Playbooks

Counter Trey out of Shotgun Doubles Offset is a gap scheme power run built to hit off tackle to the weak side. The diagram shows the backside guard and tackle pulling across the formation to lead through the hole while the offensive line down blocks to seal the interior, with two outside receivers and a TE stacked near the line running off coverage vertically to occupy the corners and hold the safeties. The HB takes a counter step away from the play direction before pressing back downhill, so the primary read is patience: let the pullers get in front, identify the first color that shows in the hole (linebacker or safety), and cut off the lead blocker's block.
Watch for linebacker depth at the snap, since shallow linebackers who crash downhill immediately can be misdirected by the counter step and pulling linemen. Overload fronts and 3-4 looks with an extra edge defender crashing the play side can blow this up before the pullers get set, so check the box count pre-snap. Man coverage on the outside receivers and TE lets those vertical routes hold cornerbacks deep, keeping numbers even in the box for the run. Zone coverage shells with safeties sitting deep can rotate down late and fill the alley, so identify two-high versus single-high safety alignment before the snap to gauge run support. A user-controlled defender flowing hard to the play side or a linebacker keying the pulling guard is the biggest threat, since disciplined backside pursuit can catch the counter from behind.
Use pre-snap motion or a quick look at the box count to confirm you have enough blockers for the counter action before the snap.
If the defense shows a heavy box or an extra defender crashing down, consider audibling to Inside Zone or HB Draw from the same set to punish overpursuit.
Against aggressive linebackers who read run keys fast, this play still gets home because the counter step and pulling guard/tackle create a natural misdirection freeze.
Pair this play with RPO Zone Alert Bus or RPO Zone X Smoke on early downs so the defense has to respect both the counter run action and the quick perimeter throw out of the same look.
Best called on early downs (first and ten or second and short) when you want to establish the run and set up play-action rollouts later in the series.
Manually take control of your lead puller if the CPU blocker whiffs, since sealing the first threat at the point of attack is what springs this run for a big gain.