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This 2025 NFL season has witnessed two powerful teams maintain their flawless records through the first four weeks: Buffalo and Philadelphia. Both teams are undefeated, sparking discussion about a potential title game matchup.

Reasons for a 'Storybook Year' for the Bills

The Bills are guided by last season's MVP Josh Allen, and he continues to drive the offense. Although they have looked more convincing so far, Philadelphia have faced a tougher slate.

The Bills narrowly defeated the Baltimore Ravens with a game-winning field goal, followed by comfortable wins over the New York Jets, Dolphins, and New Orleans Saints.

"The squad has evolved in recent seasons," commented a ex coach with the Bills. "It's orchestrated by Josh Allen. He is truly the engine."

"Buffalo's O-line is also terrific. It allows the running back to truly become that guy, but what makes these teams so great is taking care of the football. Both are doing a really nice job of that."

Each teams have given up the ball only one time this campaign. They are set to face off in week 17 at Highmark Stadium in what could be a championship preview.

"There is often this part of you that thinks, 'we should stay healthy and watch where this leads', but sometimes the stars come together," she continued. "Considering this being the farewell tour of Highmark Stadium, I mean, this might be a dream year for the Bills."

"Within the AFC, you're thinking 'who is our main rival right now?'. I feel like the most well-rounded team is the Bills. The question is, can we maintain this trajectory that we're on?"

In What Ways Are the Eagles Finding Ways to Win?

Eagles fans are staying cautious for now. Firstly, they are used to winning, having reached two of the past three championship games and denying the Kansas City Chiefs a third straight title in last season's finale.

The Eagles have yet to be at their peak on offence or defense, but every game they tend to commit the fewest giveaways, and the team that controls that battle tends to emerge victorious in the game.

"They have claimed victory in 20 of their last 21 matchups, and a big factor for that is recording 42 takeaways and just nine turnovers," explained a team journalist. "Their a safe style of offence."

"Their attack has not yet met projections, but the Eagles are figuring out how to win. They simply have a victorious DNA. They're winning games unconventionally, so you have to question, 'is it repeatable is that?' But I think that really underscores how balanced this team is."

The Eagles have defeated the Dallas Cowboys, Chiefs, Rams, and Tampa Bay Buccaneers, but each were one-score games.

Tailback Barkley and receiver AJ Brown have had slow beginnings to the season, but the team's special units have come up big, blocking three straight kicks over the past two games and returning a pair for a touchdown.

"Michael Clay, the Eagles' special teams coordinator, is perhaps the best in the business at what he accomplishes," added the reporter.

"In the third phase, every year you have a different group of players, compared to offense and defence where there's more continuity. The Eagles have first-string players who contribute on special units. They have a collective buy-in and a vested interest from the roster, and they're equipped to go out there and make plays."

"When I spoke with the player [who scored on Sunday], he said that it's distinct in Philadelphia because players on special units have specific jobs. Their attitude toward things a bit uniquely, and that's where they're able to see the enthusiasm and the concerted effort they place on that."

How the 'Tush Push' Is Changing

The Eagles' head coach Sirianni developed the concept of the 'Brotherly Shove' play, which is a variation of the standard QB sneak, with players assisting to drive the QB in goal-line scenarios.

They have perfected the play and even though 22 team owners voted for it to be banned in May, it fell short for the Tush Push to be eliminated.

However, Philly are now running 'decoy push' plays, that at first look similar but turn into something different. One such example on game day saw the quarterback toss the ball back for the running back to run in a walk-in touchdown.

"Opponents are attempting to sell out to halt the shove," said the reporter. "But the options the Eagles are capable of now run off that, it opens up a lot more possibilities and puts defences in a tough bind in how to stop it, knowing that you have other [plays] on tape to account for."

"In my opinion it's brilliant. It compels you into different game planning," added the former coach.

"Adding those little wrinkles to the play, you're keeping teams defensively on their heels. [They're thinking] 'are they actually go straight ahead? Are they going to give to the back? Is it be a passing play?' I mean, this is the cleverness of the strategies within the NFL."

The Broncos will be the upcoming team that tries to contain the Tush Push on this weekend, while Buffalo host the Patriots.

"When you get to the fifth week, that's really where you get a clearer idea of what a team's identity is on both sides of the ball," the reporter concluded.

"Now is the moment, and it appears that both teams have a strong case for having a lengthy postseason in the post-season."