Playbooks
Over G is a defensive set inside the 4-2-5 Big Nickel formation, and the naming matters: "Over" refers to the front shifted strong with the nose tackle covering the strong side guard, and "G" reflects the guard shade that anchors the interior. Unlike the standard 4-2-5 Nickel sets that spread the front wide and lean pass rush, Over G stacks weight to one side of the center, giving you a legitimate run front out of a five defensive back package. You get two edge rushers (RLE and RRE), a nose tackle plugged inside, two linebackers with a SUBLB in the box, and a slot corner (SLCB) plus the extra safety body that defines Big Nickel personnel.
Use this as your base second and medium set: the run front holds and the coverage list lets you sit in Cover 4 Palms or Cover 3 Buzz Match without a personnel change tell.
Show one high pre snap and rotate late into Cover 6 Trap or Cover 6 Invert so the QB reads a single high shell and throws the out into your trapping corner.
User the free safety or the SUBLB rather than a corner: the coverage art already handles the outside, and you need a body reading the second level with only two linebackers on the field.
When you dial SS Blitz 2 or Ws Blitz 2, pinch your ends and manually drop one rusher to a hook so you keep four in coverage against quick game and RPO reads.
Against heavy personnel, check out of Big Nickel entirely rather than spamming Pinch Blitz, and save Casino Blitz and Corner Blitz 3 for third down when the offense has to protect five wide receiver splits.