http://www.nfl.com/news/story/0ap10...ks-defense-emerging-as-one-of-nfls-best-units
Seattle employs a hybrid 4-3/3-4 scheme that seamlessly transitions from a conventional four-man alignment to an overload front with 3-4 principles. While most teams incorporate "over" and "under" fronts into their game plans, the
Seahawks' hybrid scheme works due to the versatility of their front seven.
For instance,
Red Bryant and
Chris Clemons are listed as defensive ends, but both bring different skills to the table. Bryant, who is built like a defensive tackle at 6-foot-4, 323 pounds, is a big, physical edge player with skills normally attributed to interior defensive linemen. He specializes in pushing offensive tackles and tight ends into the backfield, which prevents running backs from turning the corner on the strong side. Clemons, who measures in at 6-3, 254 pounds, is an exceptional edge player on the open side. He is a superb speed rusher with the athleticism and burst to sprint around the corner against heavy-legged offensive tackles. Carroll takes advantage of Clemons' unique skills by using him as the "Leo" (a hybrid defensive end/rush linebacker) to create consistent pressure off the edge.
On the interior,
Brandon Mebane and
Alan Branch are big-bodied run stuffers with the ability to one-gap or two-gap in the middle. With
Jason Jones and
Bruce Irvin also filling roles as situational edge players, the
Seahawks are able to throw a variety of combinations at opponents to create mismatches along the line.
Size matters in the secondary
The increasing size of NFL wide receivers has prompted some teams to alter their measurable standards for players in the secondary. Many are eschewing diminutive corners with extraordinary speed and agility, in favor of big, physical defenders with exceptional length and athleticism.
The
Seahawks are spearheading this movement, with three members of their starting secondary measuring in over 6-3.
Brandon Browner (6-4, 221 pounds),
Richard Sherman (6-3, 195) and
Kam Chancellor (6-3, 232) are three of the biggest defensive backs in the NFL, and their collective size allows
Seahawks to match up with the tall pass catchers dominating the league. Cornerbacks Browner and Sherman excel in bump-and-run coverage, relying on their physicality and length to disrupt receivers early in routes. The constant harassment disrupts the timing of the passing game, and forces quarterbacks to fit balls into tight windows. As a result, more balls are tipped and deflected, leading to more interceptions in the backend.