Seattle signed Trevon Diggs to a one-year deal. Here's the confirmed role, the health risk, and the evidence that will decide whether he starts.

Cover 4 divides the deep field into quarters, typically with two corners outside and two safeties inside. A common distribution uses four rushers and three underneath defenders behind them.

The West Coast offense is a passing philosophy built around coordinated quarterback footwork, route timing, progressions and accurate placement. Short and intermediate throws can perform a ball control role while…

Seahawks at Titans closes the weekend on FOX. Get the confirmed viewing details, opener stats and roster battles that matter in Nashville.

Cowboys at Cardinals features special teams corrections, rising receivers and strong quarterback depth. Get the time, TV and key matchups.

Packers at Broncos brings Bo Nix, Jordan Love and two starting units into focus. Get the time, TV details, key numbers and matchups to watch.

A squib kick uses a low, awkward bounce to disrupt a return. Learn its clock tradeoff and how the NFL landing zone changes the tactic.

A coffin corner punt trades distance for placement near a sideline and goal line. Learn the target, returner decisions and touchback risk.

The zone read accounts for an unblocked defender with a quarterback decision. Learn the basic read and how a scrape exchange challenges it.

A Bear front covers the center and both guards. Learn how it disrupts combination blocks and why it does not identify the coverage or rush count.