Does anyone run 3/4 defense?

Is the 3-4 Defense Still a Force in the NFL?

Yes — and it remains one of the most influential defensive schemes in the NFL. While defensive trends shift over time, the 3-4 defense continues to be a staple for many teams. Named for its alignment — three defensive linemen and four linebackers — this formation offers flexibility and strategic depth that coaches love.

The three down linemen are typically responsible for controlling gaps and pressuring the quarterback, often with less emphasis on pure size and more on quickness and technique. Their main job? Disrupt the run and create chaos in passing plays. Behind them, the four linebackers are the heart of the scheme. One or two of them are often designated pass rushers, while others cover zones or man-to-man assignments, depending on the play.

With five defensive backs — usually two cornerbacks and three safeties — the 3-4 allows for better coverage against today’s pass-heavy offenses. It can morph into complex blitz packages or drop into zone coverage seamlessly, making it harder for quarterbacks to read and react.

Teams like the New England Patriots in the early 2000s and the Pittsburgh Steelers over multiple decades have famously thrived with the 3-4. Even as the league evolves, with more spread offenses and mobile quarterbacks, savvy defensive coordinators still lean on this system to keep opponents guessing.

While not every team runs a "pure" 3-4 anymore — many blur the lines between 3-4 and 4-3 fronts — the principles remain. The ability to disguise coverages, rotate pressure, and keep offensive lines off balance ensures that the 3-4 isn’t just surviving in the modern NFL — in many ways, it’s still leading the way.