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Five most improved offenses in the NFL

Rex Ryan arrived in Buffalo to a familiar scene, staring at an imbalanced roster with most of the talent on the defensive side of the ball.

After a March spending spree, however, the Bills are now one of the most fascinating teams in the league.

Hall of Famer Andre Reed proclaimed this week that the Bills have the talent to "make a run at New England" after adding a trio of impact players to an offense that stunted the organization's playoff hopes in 2014.

Buffalo isn't the only city with expectations of a high-scoring renaissance.

Let's take a look at the five most improved offenses since the end of the 2014 season:

1. Buffalo Bills

NFL Media analyst Bucky Brooks has outlined the reasons to expect new coordinator Greg Roman's offense to spark a legitimate playoff run this season. Minus a reliable quarterback, Roman will orchestrate a run-centric offense with McCoy, bruising lead blocker Felton and savvy veteran Fred Jackson. The 49ers ranked eighth, fourth, third and fourth in the past four years on the ground under Roman.

In Harvin and Sammy Watkins, Roman has the benefit of two explosive weapons to draw up creative misdirection runs and gadget plays that will frustrate defensive coordinators. Throw in tight end Charles Clay and possession receiver Robert Woods, and the Bills might have more weapons than any offense in the league.

This collection of playmakers can stretch the field horizontally like few we've ever seen. The question is whether they can beat defenses vertically.

2. Indianapolis Colts

The Colts were leading the NFL in offense, with Andrew Luck on pace to break Peyton Manning's single-season passing yards record at midseason. Then a sluggish Trent Richardson and an injury-ravaged Reggie Wayne functioned like a two-pronged anchor, grinding the offense to a slow crawl by December. Past their primes or not, Gore and Johnson are major upgrades and just what the doctor ordered for Pep Hamilton's offense.

If the injury gods cooperate, this could be the NFL's most loaded, pick-your-poison offense in 2015.

3. Seattle Seahawks

Additions:Jimmy Graham

The NFC champions made only one move, but it's the one that sent shockwaves through the NFL on the first day of the league year. The lack of a big, physical red-zone target for Russell Wilson played a direct role not only in the Super Bowl XLIX loss but also Seattle's "turning point" defeat at Kansas City in Week 11.

When not battling nagging injuries, Graham has a strong claim as the league's most unstoppable end-zone mismatch.

4. Philadelphia Eagles

Do you believe Chip Kelly knows what he's doing now that he has taken on the role of personnel czar?

Unsatisfied with a 10-6 record and a shot at the division title, Kelly opted to gamble on a higher ceiling.

He views potential franchise quarterbackSam Bradford as an upgrade over Nicks Foles, who was increasinglyerratic in eight starts last season.

On the heels of LeSean McCoy's inefficient 2014 season, Kelly viewed north-south hammers DeMarco Murray and Ryan Mathews as better backfield fits for his power-spread scheme.

If Kelly's evaluations are on point, this offense should be the best he has fielded in Philadelphia.

5. Jacksonville Jaguars

The Jaguars struck out on Randall Cobb, but still managed to coax one of the NFL's most talented tight ends to North Florida. Adding Julius Thomas and right tackle Jermey Parnell should be a boon to quarterback Blake Bortles, who was sabotaged by a porous offensive line and a greenhorn receiving corps as a rookie.

General manager Dave Caldwell isn't finished tinkering with the offense. Look for the Jaguars to target a bruising running back by the mid rounds of the draft.

The latest Around The NFL Podcast debates which players are most likely to break prominent records and discusses Jameis Winston's pro day. Find more Around The NFL content on NFL NOW.

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