Playbooks

HB Counter out of Shotgun Trio is a gap scheme run play with a pulling guard leading the way for the HB, who takes a counter step before hitting the hole. The three receivers stay uninvolved as decoys, letting the offensive line and pulling blocker create a misdirection lane against overaggressive defensive fronts. This is a pure run play designed to attack defenders flowing hard with the initial fake, so the primary read is the pulling guard's block: follow him through the designed gap and cut off his lead.
Key the frontside linebacker's first step, if he flows hard with the initial action he is out of position once the counter hits the backside gap. Watch for an edge defender crashing down the line, since that is exactly the aggression this play is designed to exploit with the pulling blocker. Scrape exchange linebackers who stay patient and read the pulling guard are the biggest threat to blow this play up before it develops. A defensive lineman who holds his gap discipline instead of chasing flow will collapse the counter lane and force the HB to bounce outside. Look for user controlled linebackers spying the backfield, since a disciplined user defender can jump the counter path and make the tackle for a loss.
Run this out of 11 personnel on early downs to keep the defense honest against your pass-heavy Trio concepts like Mills Y Corner and Steeler Dig.
Watch linebacker depth before the snap, if they are crashing downhill on run fits, the counter action will freeze them just long enough to spring the HB.
Use manual control on the pulling guard when facing a stacked front so you can adjust his path in real time against a hard crashing edge defender.
Pair this play with HB Off Tackle or Inside Zone in the same drive to sell the same run action, then come back to Read Option or a play-action shot off the identical alignment.
Best deployed on second and short or first and ten when the defense is likely to sit in base personnel and bite on the initial flow.