For much of the 2021 season, Green Bay Packers defensive coordinator Joe Barry has used an unusual personnel grouping when deploying five defensive backs on the field. Most teams deemed to run a 3-4 base alignment will drop an interior lineman in favor of a DB, resulting in a 2-4-5 grouping with a pair of interior linemen, two pass-rushing outside linebackers, and two off-ball linebackers.
The Packers, instead, have been running more of a 3-3-5, instead keeping three linemen on the field and removing one of the inside linebackers instead. That has come with varying levels of success, but it has often allowed full-time linebacker De’Vondre Campbell to flow to the football and roam sideline to sideline as he makes plays.