For the better part of five years, the Buffalo Bills have been the best team in the AFC that could not get past the Kansas City Chiefs. Josh Allen has been one of the best quarterbacks in football. The roster has been built to win. The moment has arrived every January, and every January the same answer has come back.
Not this year.
Allen went 0-4 against Patrick Mahomes in the playoffs. The AFC Championship. The Divisional round. Close games, heartbreaking losses, and a franchise that started to feel like it was watching its window close from the inside.
Then something changed. Mahomes tore his ACL and LCL. The Chiefs are not the same team if he is limited, unavailable, or still working his way back to full strength. The AFC that had one immovable object at the top of the bracket suddenly feels more open than it has in years. And the Bills, with a new head coach, an upgraded roster, and the same elite quarterback they have always had, are walking into 2026 asking a question they have not been able to answer in years: if not now, when?
The Window Is Open. Maybe For the Last Time.
This is not a young Bills team in the early stages of building toward something. Josh Allen is 30 years old. He is in his prime, but his prime has a timeline, and the core of this roster has been constructed and reconstructed around him for the better part of a decade.
The 2025 season ended in the Divisional round with an overtime loss to the Denver Broncos. After two consecutive postseason exits before the Super Bowl, Sean McDermott was fired in January. The Bills did not blow up the roster. They did not start over. They promoted offensive coordinator Joe Brady to head coach on a five-year deal, kept the core intact, and made targeted additions to address the gaps that cost them in January.
The message from ownership was clear: this is still a win-now roster. We are not rebuilding. We are running it back with better pieces and better coaching.
With Mahomes working back from major knee surgery and trying to be ready for Week 1, the AFC has a different shape than it has had for most of Allen's career. The Bills know it. The entire building understands that 2026 might be the best chance they get.
Joe Brady's First Test
Joe Brady has been in the Buffalo building for four years: quarterbacks coach from 2022-23, interim offensive coordinator late in 2023, and full-time offensive coordinator from 2024-25. He knows Allen. He knows the offense. He knows what this team is trying to do.
That familiarity is the argument for the promotion. Brady has not been the problem in Buffalo, and the offense under his coordination was one of the better units in the AFC. He understands how Allen operates best, what kinds of play designs get him into rhythm, and how to use the skill position group around him.
The argument against is simply that he has never been a head coach. Managing the full operation, both sides of the ball, personnel decisions, clock management, big-game pressure, is a different job than running an offense on gameday. Whether Brady grows into the role quickly enough to matter in 2026 is the question.
What works in his favor: the roster does not need him to be great right away. It needs him to be steady, to maintain accountability beyond the Allen relationship, and to let his quarterback operate. If Brady keeps the offense balanced and lets the game come to Allen, Buffalo can win a lot of football games.
DJ Moore and the Big-Play Dimension
The most significant addition to the Bills' roster is DJ Moore, acquired from the Chicago Bears along with a 2026 fifth-round pick in exchange for Buffalo's 2026 second-rounder.
The Stefon Diggs departure before the 2024 season left a hole at the top of the receiver room that Buffalo never fully replaced. Khalil Shakir developed into a reliable option, and Keon Coleman flashed potential, but neither gave Allen the kind of proven outside playmaker who can win in one-on-one coverage and change a game with a single catch.
Moore does that. He is a route runner with legitimate big-play ability, the kind of receiver who can create separation at every level of the field and make plays in traffic. He also has history with Brady from their time together in Carolina, when Moore produced two of the best seasons of his career. That matters. This is not just a talent bet. It is a fit bet.
Early camp reports have Allen and Moore already showing the kind of chemistry that takes some receivers multiple seasons to develop. If that connection holds into the regular season, the Bills' offense has a ceiling it has not had since Diggs was at his best.
Behind Moore, the depth is real. Shakir in the slot is one of the more underrated receiver situations in the AFC. Joshua Palmer provides a third option. Tight ends Dalton Kincaid and Dawson Knox give Brady multiple looks in the passing game. The offensive line, stabilized by O'Cyrus Torrence's reported four-year, $78.4 million extension, gives Allen the protection he needs to operate.
This offense, healthy and clicking, is one of the best in the AFC. That has been true for a while. The difference in 2026 is that Moore gives it the missing piece at the top of the receiver hierarchy.
Rebuilding the Defense With Leonhard's 3-4
While the offense gets most of the attention, the more significant transformation in Buffalo this offseason happened on defense.
New defensive coordinator Jim Leonhard is installing a 3-4 base, a significant shift from the 4-3 McDermott ran for years. The personnel overhaul that comes with a scheme change is substantial, and the Bills addressed it directly.
Bradley Chubb arrives from the Miami Dolphins after posting 8.5 sacks in 2025, his best season since returning from a torn ACL, and gives Leonhard a veteran outside linebacker who fits the 3-4 demands. Chubb is a major piece of the new pass rush, but he is not the whole identity. Greg Rousseau remains a core edge presence, Ed Oliver should get more one-on-one chances inside, and Leonhard's structure is designed to create pressure from multiple looks rather than simply asking one player to win every snap.
Second-round pick T.J. Parker out of Clemson adds a younger edge option with the athleticism to develop into a full-time starter. C.J. Gardner-Johnson and Geno Stone were added in the secondary to give Leonhard experienced players who can communicate and process in a new scheme from Day 1.
The linebacker room is younger and more unsettled. Terrel Bernard is the returning leader in the middle, but durability has been part of his story. Dorian Williams is a candidate for a bigger role after the departures of Matt Milano and Shaq Thompson, though Milano was the long-time Bills fixture while Thompson was only a one-year veteran stopgap. Williams has the athleticism for the role. Whether he has the experience to handle it consistently in an entirely new scheme is the question the regular season will answer.
A defense built around Leonhard's pressure structure takes time to come together. If it is average by November, the Bills are a legitimate Super Bowl contender. If the growing pains run into December, they might be playing from behind in the bracket again.
The AFC Without a Fully Certain Mahomes
Everything changes when the one player who has defined AFC football for the last eight years is not a sure thing.
Patrick Mahomes is working his way back from ACL and LCL surgery. The Chiefs are not going away, and Mahomes' stated goal is to be ready for Week 1. But even if he is on the field, the question is whether he is immediately the same player who has turned the AFC into his personal obstacle course for most of Allen's career.
That matters enormously for Buffalo. Allen has been the best quarterback in the AFC on the wrong side of history, losing to Mahomes in the moments that counted most. Now Mahomes might not be available right away, or might not be the same player when he returns. The AFC East is not a gauntlet. The wild card bracket is manageable. The road to the Super Bowl, for the first time in years, does not have an unavoidable fully healthy Chiefs team standing at the end of it.
The Bills have the roster, the quarterback, and the opening. The only question is whether they can close it.
Crystal Ball Prediction
Win total: 12-5. AFC East champions, Super Bowl contender.
Josh Allen is the best quarterback in the AFC right now. DJ Moore gives the offense the playmaker it has been missing since Diggs. Chubb, Rousseau, Oliver, and Leonhard's pressure structure give the defense a real path to being better when the games tighten. And Brady, who knows this offense and this quarterback better than almost anyone, does not have to reinvent everything. He has to manage the whole team without losing what already works.
The window is open. The Mahomes situation changes the calculus in Buffalo's favor in a way it has not been for years. The Bills have been here before and come up short. They know what it costs. They know what it takes.
Twelve wins. AFC East title. And a January run that does not end the same way the last four have.
The window will not stay open forever. This year, it is open wider than it has been in a long time.
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