Playbooks

Cover 1 Hole is a man coverage shell out of the 3-4 Odd Base 5-2 personnel that puts a single deep safety over the top while the rest of the defense locks up in man across the board. The diagram shows the deep safety (blue) breaking downhill toward the middle of the field to rob any crossing routes or dig concepts, while the underneath defender (yellow/olive) sits in the hole as a spy or robber to jump shallow in-cut routes. The four down linemen show a straight rush with no blitz tagged, so the primary read progression is press the deep middle threat first with the free safety, then let the hole defender react to any underneath crossers or option routes that break inside.
Pre-snap check safety alignment: if the offense shows single-high or empty with no true vertical threat, this call is well suited since the deep safety only has one deep third to defend. Key the running back and slot receivers post-snap since option routes and shallow crosses are what the hole defender is designed to eliminate, so jump any route that settles in the middle of the field around 5 to 8 yards. Watch for rub or pick concepts from bunch or stack formations since man coverage across the board is vulnerable to natural traffic created by tight receiver alignments. Beware of streaking receivers or corner routes to the boundary since the single deep safety can only help over the top of one route at a time, leaving the opposite sideline exposed on double moves. If the offense audibles into four verticals or has multiple receivers stacked vertically, this shell can get stressed since the free safety in the hole cannot cover the whole width of the field, so consider switching to a two-high shell.
Use this call on early downs or third-and-medium when you expect the offense to test the middle of the field with crossers, drags, or option routes since the hole defender is sitting right there to jump those throws.
Before the snap identify if the offense has bunched or stacked receivers to the same side, since the man defenders can get picked on rub routes, so consider shading your press defenders or using a pre-snap adjustment to bump coverage responsibilities.
Pair this call with Cover 1 Robber and Storm Brave 1 in the same set to disguise your shell, since all three start from a similar look pre-snap but send different numbers of rushers and change who is responsible for the hole.
If the offense lines up with a lone deep threat or a vertical stack, consider audibling the deep safety to bracket coverage or motion your best cover corner over to shadow the number one receiver.
Against spread sets with quick game concepts, get an extra jam at the line to disrupt the timing of option routes since the hole defender needs a beat to read and react before breaking on the ball.