The Green Bay Packers have secured a defensive coordinator who brings more than just promises to the frozen tundra of Lambeau Field. New hire Jonathan Gannon arrives with a demonstrable, proven track record of elevating defensive talent to its absolute peak, a fact starkly illustrated by the catastrophic collapse of a unit he once commanded.
While every new coordinator vows to attack and play physically, Gannon’s resume shows he delivers. His final season as defensive coordinator for the Philadelphia Eagles in 2022 was historically dominant. That unit finished first in defensive DVOA against the pass by a staggering margin, creating a gap so large it rendered the league’s second-ranked pass defense statistically average.
The true testament to Gannon’s impact, however, came the following year in his absence. Under a new coordinator running essentially the same scheme, and with a roster many argue was more talented, the Eagles’ defense imploded. It plummeted from a top-five ranking in Expected Points Added per play to 30th, and from first in EPA per pass to 27th. This was not a slight regression; it was a cliff dive into incompetence with largely the same personnel.
This dramatic contrast provides a crystal-clear case study. Key veterans like cornerback James Bradberry enjoyed career-best, All-Pro seasons under Gannon in 2022, only to fall out of the league two years later. Pass rusher Haason Reddick had his finest year with Gannon calling the shots. The evidence suggests these were not coincidences but the result of a coach who meticulously maximizes the players at his disposal.
Gannon’s philosophy extends beyond scheme into the granular details of coaching and weekly preparation. His ability to adapt his system to the strengths of his roster, rather than forcing players into a rigid structure, sets him apart. This was evident in Arizona, where he did not attempt to replicate his Philadelphia system with lesser talent, but instead tailored his approach.
For a Packers defense in transition, this hiring signals a commitment to building around its emerging core. With young stars like Rashan Gary and Quay Walker, and a secondary in need of direction, Gannon’s proven ability to develop talent and craft bespoke game plans is a significant reason for optimism in Green Bay.

The move also underscores a broader organizational strategy of continuity under Head Coach Matt LaFleur, even as it injects new defensive leadership. While some segments of the fanbase have expressed skepticism about the team’s direction, the acquisition of a coordinator with Gannon’s tangible results is a powerful counter-argument. His history indicates he can provide the schematic flexibility and detailed coaching necessary to construct a championship-caliber defense.
As the Packers position themselves as legitimate Super Bowl contenders in the Jordan Love era, the success of this defensive reboot hinges significantly on Gannon’s touch. If his past is prologue, the Packers have not just hired a coordinator who talks about maximizing players—they have hired one who has repeatedly done it, turning potential into peak performance and solid units into legendary ones. The proof is in the precipitous fall of the Eagles without him, a stark warning of what his presence is truly worth.