Numbers advantage to one side
Free Safety, with the front slanting to the overload side. • Edge
Say it like this
Send more guys than they can block on one side. Everyone go now.
Coach detail＋
What happens
The Safety blitzes the edge with contain, creating a numbers advantage to one side of the formation.
Coverage behind it
Mike takes the B-gap. The corner to the blitz side rolls to the deep middle.
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.