The NFL position groups most in need of upgrades

Josh Rosen's rookie season was bad, but he didn't have much help. The offensive line allowed Rosen to get sacked on 9.5 percent of dropbacks, fifth worst in the league, and David Johnson also had problems finding holes. If new head coach Kliff Kingsbury wants to improve the offense, he should start up front.

Atlanta looks like it's cleaning house on defense and for good reason. The pass rush struggled last year, compounding issues with the secondary. Robert Alford was already cut, and the team lost two prominent members last season (Ricardo Allen and Keanu Neal) to injury. The Falcons can't count on either player to come back at 100 percent after major injuries, so they'll need to add depth this offseason.

Baltimore saw major turnover at wideout last offseason, adding the trio of John Brown, Michael Crabtree and Willie Snead. The results were hit-or-miss, but the Ravens didn't get the production they hoped. Brown is now a free agent, and Crabtree is a candidate for release. Don't be surprised if Baltimore adds wideouts early in this year's draft.

Buffalo's issues up front are nothing new, and they continued last season. The team was in the bottom half of the league in sack percentage, and LeSean McCoy had only 3.2 yards per rush as the starting running back. The interior could particularly use addressing.

Carolina really struggled to get to the quarterback last season, finishing eighth-worst in sack rate. Julius Peppers retired following the season, so at the very least Carolina will need to replace him.

Cincinnati isn't likely to cut longtime starting cornerback Dre Kirkpatrick, but the rest of the secondary is in flux. The Bengals are high on young safety Jessie Bates but need to give him help after allowing 7.6 yards per pass last season, fourth-worst in the league.

Cincinnati has gotten old fast at the second level. Vontaze Burfict's football future is in question due to concussions, and the team is undermanned in the middle with Hardy Nickerson starting. It wouldn't be a surprise if the Bengals addressed the spot early in the draft.

Denver's line has made some strides, particularly in pass blocking, but there's still room to improve. Former first-round pick Garett Bolles made some nice strides, but the rest of the line needs addressing. The team did already take a big step forward by hiring acclaimed line coach Mike Munchak.

Detroit has already released Glover Quin, and young cornerback Teez Tabor looks like a bust since the team selected him in the second round in 2017. While cornerback Darius Slay is a great player, the Lions needs to surround him with more talent after allowing 7.3 yards per pass attempt last season.

Green Bay's defensive struggles recently are in large part due to subpar play at linebacker. Clay Matthews and Nick Perry have fallen off recently, and the team might not opt to bring either player back for 2019. Kyler Fackrell looks like a keeper after recording 10.5 sacks last season, but the Packers need more consistent play from their linebackers overall.

Deshaun Watson is a major injury risk as long as Houston's offensive line is struggling. The Texans spent big money on the line last offseason but still allowed a league-worst 10.5 percent sack rate. The team needs more help at both tackle and guard.

Jacksonville is set to cut Blake Bortles after a terrible 2018 season. He was benched for Cody Kessler on multiple occasions, and the team simply couldn't move the ball down the field in 2019. It's likely the Jaguars will sign Nick Foles or draft a quarterback in the first round. 

Of course, quarterback wasn't Jacksonville's only problem within the passing game. The team lost both Allen Robinson and Allen Hurns last offseason, and Marqise Lee suffered a knee injury before the season. Youngsters like Dede Westbrook and Keelan Cole showed flashes, but the overall wideout production was subpar in 2018.

Kansas City's defensive issues last season kept it out of the Super Bowl, and the secondary is the area that clearly needs to be addressed most this offseason. Starting corner Steven Nelson is a free agent, Eric Berry's health is still in question and fellow safety Daniel Sorensen was inconsistent as a starter. Kendall Fuller is an excellent starting corner and young Charvarius Ward really came on strong late in the year, but the front office is expected to make impactful moves this offseason with Super Bowl expectations in 2019.

Miami is set to move on from Ryan Tannehill after another disappointing season. Returning from a knee injury, Tannehill averaged only 180 passing yards per start in 11 games. It remains to be seen if Miami will add a veteran or draft a quarterback early, but changes are needed.

Kirk Cousins was pressured regularly with his new team, though he was sacked on only 6.2 percent of dropbacks. The poor line play was a big factor in offensive coordinator John DeFilippo's in-season firing. The Vikings need to address both guard spots this offseason.

Julian Edelman won the Super Bowl MVP after an excellent regular season, with 74 receptions for 850 yards in only 12 games. Elsewhere, the production from Tom Brady's wideouts was inconsistent, and the team could lose Chris Hogan, Cordarrelle Patterson and Phillip Dorsett in free agency. Josh Gordon's football future is also up in the air due to addiction issues. Add the possible offseason retirement of Rob Gronkowski, and we could see some drastic measures by the Patriots front office.

It's no mystery that the Giants offensive line hasn't played well in recent years. The team spent big money on Nate Solder and drafted Will Hernandez last offseason, yet Eli Manning was still sacked on 7.5 percent of dropbacks. Right tackle is a particularly high priority this offseason.

New head coach Adam Gase must correct the Jets' offensive line issues for Sam Darnold to reach his potential. The Jets struggled to run the ball for much of last season, and at the very least, they have to address left guard and center this offseason due to departures.

Perhaps no collective unit in the NFL is weaker than Oakland's front seven. The team traded Khalil Mack before last season and went on to record a total of 13 sacks for the year. The Raiders need edge rushers in the worst way, but the defensive line needs addressing early in the draft. Arden Key and Maurice Hurst are interesting young players, but beyond that pair the team has to make changes on the line.

Pittsburgh continued to produce an elite pass rush, but the secondary struggled. Former first-round pick Artie Burns was benched early in the year, and replacement Coty Sensabaugh could leave in free agency this offseason. Safety Morgan Burnett also struggled in his first season with the team.

San Francisco got strong rookie production out of middle linebacker Fred Warner, but the Niners need more talent surrounding him. Malcolm Smith has been a huge bust since the team signed him in 2017, and former first-round pick Reuben Foster was released due to off-field issues. The result is a weak unit that needs some upgrades.

Seattle opted to become a run-heavy team last season, and that was in large part due to its offensive line play. Russell Wilson has been running for his life for a few years, and last season the Seahawks allowed sacks on 10.3 percent of dropbacks, second-worst in the league. Both of the team's guards are free agents, so Seattle can start there.

The Bucs allowed 7.8 yards per pass attempt last season, second-worst in the NFL, and the secondary was one of the biggest reasons. Former first-round pick Vernon Hargreaves continues to be a bust at corner, and safety has been a major issue for the Bucs. They'll likely add more talent this offseason and hope that new defensive coordinator Todd Bowles can help.

Washington thought it was set at quarterback for the next few years by trading for Alex Smith and signing him to an extension last offseason. Unfortunately he suffered a catastrophic leg injury that could end his career. At the very least, Washington isn't counting on anything from Smith in 2019. The team saw some flashes from Josh Johnson after signing him off the street, but that's not an answer to its issues at the position.