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NFL Lockdown Report: Best defenders at preventing separation in coverage

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Season-long insights. Get 25% off PFF+ with code DRAFT. All NFL - current Fantasy College NFL Draft DFS Betting Premium Content Sign Up NFL Lockdown Report: Best defenders at preventing separation in coverage By PFF.com
Posted Jan 8, 2026 5:25 am EST Get PFF+ for 30% off: Use promo code HOLIDAY30 to unlock the PFF Player Prop Tool, Premium Stats, fantasy dashboards, the PFF Mock Draft Simulator, industry-leading fantasy rankings and much more — everything you need to win your season. It’s never too early to start preparing for next season, and for PFF, that means looking at ways to improve PFF Premium Stats. One way we’re looking to enhance the experience is by introducing more data into the mix.

Last season, we presented a new metric we coined “Lockdown Percentage,” which identifies the NFL's best defenders at preventing separation in coverage.

Here is how the league's defenders have fared this season.

What is Lockdown Percentage?  This metric focuses on coverage, measuring how well a defender prevents a receiver from getting open. It excludes plays where the defender intentionally gives up space to protect the first-down marker or limit yards after the catch.

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