A standing rule, not a call
Any linebacker with man on a back. • Whatever lane opens
Coach detail＋
What happens
Any linebacker assigned man coverage on a running back is coached that if the back stays in to block, the backer automatically rushes the QB instead. Cheap, free pressure that reuses a technique the defense already teaches.
Coverage behind it
Unchanged — nobody is uncovered, because the man he had stayed in to block.
Note
Good first blitz-adjacent concept to install: it adds no new call to memorize.
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.