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The NFL’s top defenses against each run concept

Among the remaining gap-scheme concepts are power, counter and duo plays among others, and though those can be very distinct concepts, we will put them all in one bucket for the purposes of this article to define how teams defend against all gap concepts.
Inside Zone Nobody defended inside zone runs better than the Denver Broncos last season, who had a success rate of 56.0 percent, one of just four teams to top the 50-percent barrier.
The Broncos allowed an average of just 3.1 yards per attempt on inside zone runs, also the best mark in the league and less than a yard before first contact on average.
Elsewhere in the top five, the surprise team from this list is the Indianapolis Colts, whose success rate of 55.8 percent only barely trailed the Broncos.
At the other end of the scale, the Cincinnati Bengals had the least success against inside zone runs, with a success rate of just 30.6 percent, allowing 16 explosive runs (runs of 15 or more yards) on 157 attempts.
Outside Zone The Cleveland Browns saw the fifth-most plays of outside zone run against them in 2017, but actually had the best success rate of any team at 61.6 percent.
Their average of 1.5 yards before contact was also the worst mark in the league and their success rate of 45.7 percent was 29th but it was the Washington Redskins that had the lowest success rate at just 39.8 percent.
Their success rate of 55.8 percent was the best in the game but you could make the case that the Philadelphia Eagles – second in success rate at 55.7 percent – actually had the better overall run defense.
They stuffed 28.4 percent of gap runs against them, which is more than 10 percent better than the league average and 3.0 percent better than the Broncos.
They surrendered almost two full yards per carry before first contact, again the worst mark in the league, and while the Eagles and Broncos stuffed almost a third of the gap runs that they faced, the Patriots managed just six stuffs – or 6.1 percent of their snaps against gap concepts.

Oct 22, 2017; Carson, CA, USA; Los Angeles Chargers running back Melvin Gordon (28) is tackled by Denver Broncos outside linebacker Von Miller (58) and cornerback Chris Harris (25) during the second quarter at StubHub Center. Mandatory Credit: Jake Roth-USA TODAY Sports

Though the run in today’s NFL is less important than it has ever been – passing is king – teams still need to be able to prevent offenses from just running all over them, if just to improve the favorability of the third-down passing situations they face.

At PFF, we track the run concept used on every rushing play and can therefore go even deeper and look at how teams fared when facing specific types of run plays.

When we think of blocking, we tend to break things down into zone-blocking or gap-, man-blocking systems, but within those broad buckets, there are various run plays and run concepts that can be employed.

Zone runs can target a point of attack that is inside or outside in their initial track, and we will focus on how teams defend inside zone and outside zone runs separately. Among the remaining gap-scheme concepts are power, counter and duo plays among others, and though those can be very distinct concepts, we will put them all in one bucket for the purposes of this article to define how teams defend against all gap concepts.

[Editor’s note: success rate against runs will be discussed below. Success rate against run concepts is simple, essentially stating how often on a per-snap basis did the defense record a defensive stop, which gives a percentage. For more on defensive stops, our Signature Stats Glossary explains in more detail.]

Inside Zone

Inside Zone Defense Success %

Nobody defended inside zone runs better than the Denver Broncos last season, who had a success rate of 56.0 percent, one of just four teams to top the 50-percent barrier. The Broncos allowed an average of just 3.1 yards per attempt on inside zone runs, also the best mark in the league and less than a yard before first contact on average. Denver’s run defense was dramatically improved up the middle in 2017, with an unexpected fine season against the run from Domata Peko at nose tackle, whose overall PFF grade jumped from an average of 46.3 over the previous four seasons to 80.0 with Denver.

Elsewhere in the top five, the surprise team from this list is the Indianapolis Colts, whose success rate…

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