Strategy

Run Fits and Gap Responsibility

Stopping the run is mostly about being in the right place. Learn how defenders are assigned to gaps, what a fit is, and why one missed assignment breaks a run play.

4Football Staff · Oct 17, 2026 · 10 min read

The Zone Blitz Explained

The zone blitz sends a surprise rusher and drops a lineman into coverage. See how the call works, why it was invented, and how offenses try to punish it.

4Football Staff · Oct 16, 2026 · 10 min read

Blitz Types and Pressure Packages

A blitz is a bet that pressure arrives before the coverage fails. Learn the gaps, the blitzers, the common pressure packages and how offenses are taught to answer them.

4Football Staff · Oct 15, 2026 · 11 min read

Man Coverage vs Zone Coverage

Every pass defense is man, zone or a mix. See what each one asks of the players, what it gives up, and why neither is better in every situation.

4Football Staff · Oct 14, 2026 · 11 min read

Cover 4 and Quarters Coverage

Cover 4, or quarters, splits the deep field four ways. Learn how the safeties read the receivers, what pattern-matching means, and where the coverage can be beaten.

4Football Staff · Oct 13, 2026 · 12 min read

Cover 1 Man-Free Explained

One deep safety, everyone else in man coverage. Learn how Cover 1 man-free assigns defenders, what the free safety and the robber do, why pressure pairs with it, and how offenses beat it.

4Football Staff · Oct 12, 2026 · 10 min read

Cover 2 Explained

Two deep safeties, five defenders underneath. How Cover 2 divides the field, what each player is responsible for, which routes beat it, and why it rewards a strong four-man pass rush.

4Football Staff · Oct 11, 2026 · 10 min read

Cover 3 Explained

Three deep defenders, four underneath. See how Cover 3 splits the field into thirds, who covers the flats and hooks, why it is a staple at every level, and which routes attack it.

4Football Staff · Oct 11, 2026 · 11 min read

Nickel and Dime Packages

Why defenses swap linebackers for extra defensive backs: what nickel and dime mean, who comes on and off the field, when each is used, and the run-defense price a defense pays.

4Football Staff · Oct 10, 2026 · 11 min read

The 3-4 Defense Explained

Three down linemen, four linebackers, four defensive backs. See how the 3-4 uses a nose tackle, two-gap play and disguised pass rushers, and what it asks of the players who run it.

4Football Staff · Oct 9, 2026 · 10 min read

The 4-3 Defense Explained

Four down linemen, three linebackers, four defensive backs. Learn what the numbers mean, who plays where, how the Over and Under fronts differ, and where a 4-3 is strong or stretched.

4Football Staff · Oct 8, 2026 · 11 min read

Pass Protection Schemes on the Offensive Line

How offensive lines and backs keep a quarterback clean: man, slide and hybrid protections, how the center identifies the threat, and why a pass rush only needs to win once.

4Football Staff · Oct 7, 2026 · 10 min read