Cover 3 Match

Key the two deep corners first, if they are staying square and bailing to the sideline thirds you have Cover 3 Match confirmed and can rule out man coverage. Watch the slot defenders at the snap, if they jam and mirror the inside receiver's release that confirms match rules are live and any crossing route will be picked up rather than run through to zone. This coverage is vulnerable to quick out and flat combinations if the underneath defenders are still reading the quarterback instead of matching immediately, so look for a soft corner rerouting late. Bracket concepts and deep out routes to the numbers can stress the deep third defender's leverage since he has to respect both the vertical and the sideline break. If the offense runs four verticals, this shell holds up well since three deep defenders funnel routes into the middle hook defender, so avoid calling this against heavy run formations where the underneath defenders get outnumbered at the point of attack.