Football’s two main base defenses are the 3-4 and 4-3. The 3-4 alignment of three defensive linemen and four linebackers has been the Chiefs’ approach under Andy Reid.
But a 4-3, a more traditional alignment with four defensive lineman and three linebackers, could be in the team’s future under new coordinator Steve Spagnuolo, named last week to replace Bob Sutton.
Such a switch can be radical, as players are asked to adjust to new roles and responsibilities. But if the Chiefs head in this direction, much of their current roster makeup seems well-suited for change.