Over

The Over set in the 4-3 shifts the defensive line toward the strength of the formation, putting the NT in a shade on the center to the weak side, the RDT in a 3-technique, and the ends (RLE and RRE) wider on the edges. That shift creates a strong-side bubble for the Mike and Will to scrape while the 3-technique wins one-on-one against a guard. Compared to the Normal 4-3 alignment, Over is built to take away strong-side run fits, stress interior pass protection, and give you a defensive front that looks the same whether you call Tampa 2, Cover 1 Hole Press, or Free Fire.

Personnel stays in Base 4-3: four down linemen, three linebackers, two corners, and two safeties. That gives you heavier run defense than Nickel or Dime and lets you match 12 and 21 personnel without substituting. The tradeoff is linebackers in coverage. Offenses will try to isolate a Sam or Will on a slot receiver or a speed back, so the set leans on disguise, press looks, and safety rotation (Cover 3 Cloud Press, Cover 6, Cover 4 Palms) to protect those matchups.

The playbook covers every family: man-free pressure with Cover 1 Sting WK and Cover 1 Robber Press, split-field zone with Cover 6 and Press Quarters, and five-man and six-man heat with Olb Fire Man, Dbl Safety Blitz, Thunder Smoke, and Free Fire 3. Because the front never changes, opponents can't read coverage from the line, and you can build a menu of pressures and bail coverages off one pre-snap picture. It is strongest against inside zone, power, play-action, and heavy personnel. It is at its weakest when spread sets force linebackers to carry vertical routes.