Alley defender
The run support between box and sideline
The defender (usually a safety or nickel) responsible for the 'alley' — the lane between the box and the sideline on outside runs. He's the last line before the ball turns the corner.
When it applies
Against outside zone, toss, and any run that stretches the defense.
+ StrengthsCloses the cutback and the bounce at once when he triggers fast.
− Trade-offsPlay-action holds him and the alley goes undefended; he's often outnumbered.
Filed under: Run fits and gap control