With the dust finally settled on the 2010 offseason, and with training camps around the corner, it's time to take a look at how the NFL landscape has changed.
In particular, which units on what teams have made the most dramatic improvements through the draft and free agency?
Here are 10 units of wide receivers, defensive backs, defensive lines, and offensive lines that are poised to be much better than their 2009 versions.
The Miami Dolphins made a big splash this offseason when they traded a second round pick to the Denver Broncos for Brandon Marshall. They promptly signed Marshall to a four-year, $47.5 million contract.
Despite losing Ted Ginn, Jr., the Dolphins made a huge upgrade at receiver with the acquisition of Marshall, who had 101 catches for 1,120 yards and 10 touchdowns for the Broncos last year. He was unstoppable at times, regardless of opposing defenses' constant double-teams. He should give similar production for the Dolphins this year, who have a better quarterback in Chad Henne than Marshall had last year in Kyle Orton.
Brian Hartline should continue to develop this year, especially with so much defensive attention focused on Marshall. He had a solid rookie season, with 31 catches for 506 yards, and he should put up much bigger numbers in 2010. Hartline has good speed, and he has shown the ability to make big plays.
The San Francisco 49ers used a pair of first round draft picks this year to grab OT Anthony Davis and G Mike Iupati. Both will start in 2010, and both should be solid cornerstones in the front five for many years to come.
With this youthful infusion to the 49ers' offensive line, there should be a vast improvement in pass protection and run blocking.
Jacksonville's defensive line struggled last year, and they made it a point of focus for 2010. With the signing of defensive end Aaron Kampman and the drafting of defensive tackle Tyson Alualu, the Jaguars made a significant improvement.
If Kampman can stay healthy and Alualu develops quickly, the Jags will have a formidable front.
The Bucs may have seen the second coming of Warren Sapp when they drafted defensive tackle Gerald McCoy with the No. 3 overall pick in the draft this year. McCoy gives them a big, athletic playmaker who is stout against the run, can rush the passer, and demands double-teams.
In the second round of the draft, the Bucs selected defensive tackle Brian Price. While he doesn't have McCoy's pass rushing ability, he is very solid against the run.
The youthful infusion of McCoy and Price will look to give the Bucs one of the strongest defensive lines in the league for years to come.
While the Jets have the best cornerback in the game in Darrelle Revis, they knew they would have to upgrade the secondary to compete against pass-happy teams like the Indianapolis Colts. So, they acquired a big name from the San Diego Chargers in Antonio Cromartie to play opposite Revis.
Cromartie has been inconsistent, but can be one of the best cornerbacks in the league when he plays disciplined.
With the addition of cornerback Kyle Wilson, who they drafted in the first round this year, the Jets will be much more difficult to pass on this year.
Cleveland was atrocious on defense against the pass last year, and Mike Holmgren made it a priority to fix it. The Browns used their first pick in the draft on Joe Haden, who has the potential to be a shutdown corner.
They also used a second round pick on safety T.J. Ward, and made a trade with the Eagles for former Pro Bowl cornerback Sheldon Brown.
With a good mix of youthful athleticism and veteran leadership, Cleveland is confident it no longer has a problem in its secondary.
The Baltimore Ravens needed a legitimate No. 1 receiver after finishing 2009 with the aging Derrick Mason as their best pass catcher. So, they traded with the Cardinals for Anquan Boldin, who should provide them with a big play threat.
With the addition of Donte Stallworth, the trio of Mason, Boldin, and Stallworth should be much more difficult for defenses to stop. Joe Flacco will finally have some consistent targets.
While he only had 39 catches for 600 yards last season, Antonio Bryant has the capability to stretch the field at wide receiver. Last season he was bothered by a sore knee, but if he can stay healthy in 2010, he might come close to duplicating his 2008 feat of 83 catches for 1,248 yards. Playing as a No. 2 receiver alongside Chad Ochocinco, he should get favorable coverage from defenses and have the opportunity to make some plays.
Matt Jones was an under-the-radar move that could turn out very favorably for the Bengals. If he can get his focus back on football, and regain the form he once had with the Jaguars, Jones could turn out to be a steal for Cincinnati.
The Bengals also picked up Jordan Shipley in the third round of the 2010 draft. While he lacks elite speed, he has great hands, and could turn out to be an excellent third option for them in the future.
The Detroit Lions made some serious moves to turn their defensive line around in 2010. Drafting number two overall in the draft, they selected defensive tackle Ndamukong Suh. Suh should be a monster in the middle for Detroit for many years to come. Suh will have to be constantly double-teamed by opposing offenses, and when he isn't making plays himself, he will open up opportunities for his teammates.
Kyle Vanden Bosch missed the presence of Albert Haynesworth in Tennessee last year and was limited to three sacks. His move to Detroit to play alongside Suh should give him the extra edge he needs to regain his past form and put up much better numbers.
Corey Williams comes to the Lions from a trade with Cleveland. Together with Suh, he will help to form an almost immovable front that should be nearly impossible to rush against. He will also provide some additional push up the middle in pass rushing, which should allow Vanden Bosch additional free space to get to the quarterback.
The Washington Redskins had one of the worst offensive lines in the league last year. They surrendered 38 sacks, and Jason Campbell was constantly hurried into making bad decisions. Their run blocking didn't fare much better, and they could never open up consistent running lanes.
Mike Shanahan chose the highly athletic tackle Trent Williams with the number four overall pick in the draft. Williams is a perfect fit for Shanahan's zone blocking scheme, and his athleticism should provide solid pass protection on Donovan McNabb's blindside.
The versatile Artis Hicks was signed in free agency, and he will give the Redskins a steady presence at guard. The Redskins also traded with the Saints for former two-time Pro Bowler Jammal Brown. Brown gives the Skins another bookend at right tackle, and possible insurance at left tackle in case Williams falters.
Altogether, this offensive has taken a major leap forward from last year.