A linebacker-tagged twist
Sam. • Sam → B
Say it like this
Sam blitzes inside while the lineman in front of him loops out.
Coach detail＋
What happens
The Sam backer — not a lineman — dips and rips across the Tackle's face into the B-gap. It is the twist concept with a linebacker as the mover.
Coverage behind any blitz — the one rule to teach: whoever is left uncovered by the blitzer's departure rotates to fill his zone. If a Safety blitzes the edge, the other deep defender (or a rotating corner) takes the deep middle third and the underneath defenders redistribute to 3-under. If Mike blitzes an A-gap, the backside ILB or a rotating DB takes the vacated hook-curl. One rule applied consistently beats memorizing a different rotation per blitz.