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Read Defender

Offense

also: read key · read man · key defender

The unblocked or conflicted defender whose post-snap movement tells the quarterback whether to give, keep, or throw.

On Zone Read, the backside defensive end (E) is left unblocked; the quarterback reads his initial step to give to the running back (B) or keep.
Read defender: On Zone Read, the backside defensive end (E) is left unblocked as the quarterback's mesh read key.

Read defender (or read key) is the overarching term for any defender whose post-snap movement dictates whether the quarterback hands the ball off, keeps it as a runner, or throws a pass.

Rather than assigning a blocker to every defender in the box, option and RPO schemes intentionally leave one defender unaccounted for in the blocking count. Modern offenses organize read defenders into three specialized roles:

Dive Key
An unblocked interior lineman or edge defender read at the mesh point (Zone Read, Veer) to choose between giving to the dive back or keeping.
Pitch Key
An unblocked perimeter force defender attacked on the edge (Speed Option, Triple Option) to choose between keeping in the alley or pitching outside.
Conflict Defender
A second-level linebacker (like the Will) or overhang safety on Run-Pass Options (RPOs), read to choose between handing off against a light box or throwing into the pass window vacated behind him.

Leaving the read defender unblocked neutralizes him at the point of attack while preserving offensive blockers to climb and seal the rest of the defense.

Also calledread key, read man, key defender
Not to be confused withforce player, pitch key, dive key, conflict defender

Playbook Examples

  • Zone Readzone run with one defender left unblocked for the quarterback to read after the snapSpread Option
  • Power Readpower blocking with an edge defender left unblocked to choose between the back's sweep and the quarterback's inside runSpread Option
  • Speed Optionperimeter option with no dive phase: the quarterback attacks the edge and keeps or pitchesSpread Option
  • Zone Read + Bubbleinside Zone Read with a Bubble Screen attached to punish an overhang who joins the run fitSpread Option

The Read Defender Family

Hierarchical flowchart of the Read Defender family: Dive Key (interior option, run vs. run), Pitch Key (perimeter option, run vs. run), and Conflict Defender (RPO pass option, run vs. pass).
The Read Defender family: Dive Key (interior run choice), Pitch Key (perimeter run choice), and Conflict Defender (RPO run-vs-pass choice).

A note on how the term is used

Read defender is the broad umbrella term across option and RPO football. Dive keys and pitch keys are option read defenders choosing between two runners, while conflict defenders are RPO read defenders choosing between a run fit and pass coverage.

Related terms