5 defining moments that shaped Gannon’s Cardinals legacy
The End of an Era
The Jonathan Gannon era in Arizona has officially come to a close. This was confirmed weeks ago when the Cardinals decided to part ways with Gannon after the 2025 season, and it was later revealed that he had joined the Green Bay Packers as their defensive coordinator. As the team looks for his successor, it’s time to reflect on the key moments that defined Gannon’s tenure with the Cardinals.
The Introductory Press Conference

Gannon’s arrival in Arizona came at a critical moment for the team. The previous regime under Kliff Kingsbury had left the organization in disarray, with a culture that was struggling to recover from years of losing. When Gannon took over, there was a clear mission: to restore hope and rebuild the locker room. His introductory press conference was a turning point, offering a fresh perspective and a sense of optimism. While the social media team had been busy with some overly enthusiastic content, Gannon himself came across as genuine and approachable. It was a stark contrast to what many had expected, and for the first time in a while, there was a glimmer of hope for the future of the franchise.
2023’s Week 17 Upset Win in Philadelphia

Gannon’s first year with the Cardinals was a difficult one. The team was in a rebuilding phase, with Kyler Murray recovering from an ACL injury and key players leaving the roster. Despite this, the Cardinals showed resilience, playing hard each week even if the results weren’t always favorable. Their upset win against the Eagles in Week 17 was a significant moment. It was a statement that the team was capable of competing with top-tier opponents, even on the road. This victory, along with the earlier win against the Steelers, gave fans reason to believe that Gannon could lead the team back to competitiveness.
2024’s Bye Week

The 2024 season started with promise, as the Cardinals began with a 6-4 record and were in contention for the playoffs. This was the first time Gannon was coaching a team with realistic playoff aspirations, and it seemed like everything was going smoothly. However, things quickly spiraled out of control after the bye week. The team lost five of their final seven games, finishing with an 8-9 record. This marked a turning point for Gannon, as it became clear that the team wasn’t able to maintain the momentum they had built early in the season.
2025: Week 5’s Collapse vs Tennessee

The 2025 season was expected to be a pivotal one for the Cardinals, with a revamped defense and high expectations. However, a disastrous loss to the Tennessee Titans in Week 5 proved to be a major setback. The game looked like it was within Arizona’s grasp, but a crucial dropped touchdown by Emari Demercado turned the tide. Gannon’s reaction to the play, which included a heated exchange with the player, signaled a growing tension within the team. The loss to Tennessee was a blow that the Cardinals never fully recovered from, and it marked the beginning of the end for Gannon’s tenure in Arizona.
2025: Final Home Game vs Atlanta

The final home game of the 2025 season against the Atlanta Falcons was a symbolic moment. With the team already out of playoff contention, the game was seen as a last chance to salvage something positive from the season. However, the Cardinals fell to the Falcons, and it became clear that the team was not in a position to justify keeping Gannon on board. The loss to Atlanta, combined with a string of recent defeats, made it evident that the organization needed a change.
Looking Ahead
With Gannon now in Green Bay, the Cardinals are looking for a new leader to guide them into the future. The search for a new head coach is ongoing, and there are several names being considered. The lessons learned from Gannon’s tenure will undoubtedly shape the direction of the team moving forward. While his time in Arizona may have ended on a disappointing note, it was a chapter filled with moments of hope, resilience, and ultimately, change.