FOXBOROUGH — Bill Belichick will continue tinkering with the roster throughout the summer, but his 2018 Patriots are pretty much set.

All the impact free agents are off the board. The draft is in the books. The roster is near 90 players (although undrafted free agents have not yet been finalized).

And, per usual in New England, the roster is pretty damn good.

Below, we rank the Patriots’ position groups from weakest to strongest, taking into account top-end talent and overall depth.

Note: Eleven position groups are included (QB, RB, WR, TE, OT, G/C, DT, DE, LB, CB, S). Specialists — kicker, punter, longsnapper — are not considered to be one position group.

AP/Jason Behnken

11. DEFENSIVE END

DEPTH CHART

Trey Flowers: Entering his third season as a starter for the Pats. It's his final year under contract.

Adrian Clayborn (free agent): Posted a career-high 9.5 sacks at age 29 this past season. Hasn't been a productive run defender throughout his career, according to Pro Football Focus.

Derek Rivers: The team's top draft choice in 2017 missed his rookie season due to a torn ACL.

Deatrich Wise: Looks to build on a solid rookie season.

Eric Lee: Scooped up from the Bills' practice squad when injuries hit the position last year.

Keionta Davis: Undrafted free agent in 2017 who sat out as a rookie due to injury.

Geneo Grissom: Third-round pick from 2015 hasn't panned out thus far.

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AP/Steven Senne

DEFENSIVE END ANALYSIS

The top four players — Flowers, Clayborn, Wise, and Rivers —are locks to make the roster.

There’s still some uncertainty here, though. Outside of Flowers, these aren’t proven players.

Clayborn has enjoyed a nice career, but he hasn’t been in the Patriots’ system yet.

The Pats will need either Rivers or Wise to become a major contributor.

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AP/John Raoux

10. OFFENSIVE TACKLE

DEPTH CHART

Marcus Cannon: Finished the 2017 season on injured reserve due to an ankle injury. Figures to return as a starter in 2018.

Isaiah Wynn (first round): Rookie out of Georgia is small for the position (6-foot-3, 313 pounds), but seems ready to play immediately. He could be the Day One starter at left tackle.

LaAdrian Waddle (re-signed): Impressed at right tackle in relief of Cannon, but ankle and knee injuries limited him throughout December and January.

Trent Brown (trade): The 6-foot-8, 359-pound Brown might be the biggest player in the NFL. He was San Francisco's starting right tackle the past two years.

Tony Garcia: Missed his entire rookie season due to an illness. The former third-round pick could battle for the starting left tackle job.

Cole Croston: Undrafted free agent stuck on the roster in 2017. Has upside and positional versatility.

Matt Tobin (free agent): Swing tackle for the Seahawks a year ago.

Ulrick John (free agent): Patriots will be John's sixth team in as many years.

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AP/Rick Scuteri

OFFENSIVE TACKLE ANALYSIS

It’s hard to rank this position group. We know Cannon can play. We don’t know much else.

Waddle played left tackle in Detroit, but hasn’t done it in the past two years. Wynn was a dominant left tackle at Georgia, but there are questions about his length.

Garcia is a complete unknown.

Brown primarily played right tackle in San Francisco because Joe Staley was entrenched at left tackle.

Take this for what it’s worth, but Niners coach Kyle Shanahan recently said this about Brown: “He’s the best pass protection tackle I’ve ever seen in my life.”

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AP/Winslow Townson

9. LINEBACKER

DEPTH CHART

Dont'a Hightower: Back after a torn pectoral ended his season in Week 7.

Kyle Van Noy: Has been a steal for the Pats. Started 12 games a year ago.

Elandon Roberts: Started 14 games in his second season.

Marquis Flowers (re-signed): Athletic linebacker who took a step forward last year.

Harvey Langi: Rookie season was cut short after suffering injuries in a car accident. He'll be good to go this summer, per NESN's Doug Kyed.

Ja'Whaun Bentley (fifth round): Self-described "thumper" and "gym rat" will challenge for snaps at middle linebacker.

Christian Sam (sixth round): Projects as a weakside linebacker, according to Pats director of player personnel Nick Caserio.

Brandon King (re-signed): On the books for north of $1 million in each of the next two seasons. He's a valued special teams contributor.

Nicholas Grigsby: Key special teamer was acquired midway through the 2017 season.

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AP/Michael Conroy

LINEBACKER ANALYSIS

Heading into the draft, this was considered the weakest position on the roster.

And the Pats didn’t do much to address it. Boise State’s Leighton Vander Esch and Alabama’s Rashaan Evans, two realistic targets in the first round, came off the board at No. 18 and No. 22, respectively.

New England stood pat at No. 23 and took offensive tackle Isaiah Wynn.

Off-the-ball linebacker hasn’t been a priority in recent drafts. The club hasn’t taken a linebacker earlier than Round Five since 2013, when it tabbed Jamie Collins in the second round.

If healthy, Hightower is one of the best in the game.

Van Noy has proven to be a reliable starter, too.

After that, there’s a lot to sort out. Bentley could challenge Roberts for playing time (and possibly a roster spot).

Sam, Flowers, and Langi provide special teams value in addition to what they can do defensively (all have considerable upside).

Hightower, Van Noy, and King are locks to make the roster.

That leaves Roberts, Flowers, Langi, Bentley, Sam, and Grigsby in competition for maybe three spots.

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AP/Winslow Townson

8. DEFENSIVE TACKLE

DEPTH CHART

Malcom Brown: Entering the final year of his contract. The Pats did not pick up his fifth-year option for 2018, according to multiple reports.

Danny Shelton (trade): A run-stuffer who should benefit from a change of scenery.

Lawrence Guy: Played 55 percent of defensive snaps in 2017.

Adam Butler: Pass-rushing specialist on the interior. Showed promise as an undrafted rookie.

Vincent Valentine: Third-round pick in 2016. Missed entire 2017 season with a knee injury. Could be on the roster bubble.

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AP/Ron Schwane

DEFENSIVE TACKLE ANALYSIS

The Patriots were miserable against the run a year ago. Their mark of 4.7 yards allowed per carry was the worst by any New England defense in the Bill Belichick era.

That starts up front.

The Pats let Alan Branch leave and traded for Shelton, who was the No. 12 pick in the 2015 NFL Draft.

Long-term depth is a question. The team declined fifth-year options on Brown and Shelton, making them free agents next spring.

For 2018, though, they’re all set here.

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AP Photo

7. INTERIOR OFFENSIVE LINE

DEPTH CHART

David Andrews: An undrafted free agent in 2015, Andrews returns for his third straight season as New England's starting center.

Shaq Mason: Has improved each year. In his third NFL season, Mason was probably the Pats' best offensive lineman.

Joe Thuney: Has started the past two seasons at left guard. Should retain that role unless the team bumps first-round pick Isaiah Wynn inside.

Ted Karras: Top backup in 2016 and 2017. Can play guard or center.

Luke Bowanko (free agent): The 6-foot-, 300-pound center started 14 games for the Jaguars in 2014.

Jason King: Practice squad player a year ago and a longshot to make the roster.

James Ferentz: Stuck on the practice squad for the entire 2017 season. Has NFL experience with the Broncos.

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AP Photo

INTERIOR OFFENSIVE LINE ANALYSIS

There’s rare continuity at this position. The trio of Thuney, Andrews, and Mason looks poised to remain intact for the third consecutive year.

Mason is entering the final year of his contract, and it remains to be seen if the Pats can sign him to a long-term deal.

This might be a spot they’ll need to address next spring (fortunately, first-round pick Isaiah Wynn seems to have guard/tackle capabilities).

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AP/David J. Phillip

6. RUNNING BACK

DEPTH CHART

Sony Michel (first round): Probably the most gifted running back on New England's roster.

Rex Burkhead (re-signed): Was highly productive in a unique goal line/pass-catching role this past year. Durability has been an issue.

James White: The most dependable back on the team. Will be interesting to see how much Michel cuts into White's playing time, if at all.

Jeremy Hill (free agent): Ankle was a recurring problem for two years. Hill underwent surgery in November and hopes to recapture his athleticism from 2014 and 2015.

Mike Gillislee: A healthy scratch to finish the 2017 season, Gillislee was beaten out by Dion Lewis. He enters the final year of his contract in the fall.

Brandon Bolden (re-signed): One of the Patriots' top special teams players.

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AP/Michael Dwyer

RUNNING BACK ANALYSIS

How many running backs will the Patriots keep? Last year they went with five.

Michel, Burkhead, and White are locks to make the roster in 2018.

If Bolden also sticks due to his special teams ability, that means Hill and Gillislee are battling for one spot.

Michel joins Burkhead as the only true dual threat (runner/receiver) in the backfield. It’ll be extremely difficult to replace Dion Lewis, who was one of the NFL's most productive running backs a year ago. On the bright side, Michel offers more big-play capability. Dynamic as Lewis was, he rarely ripped off runs of longer than 20 yards.

Expect Michel to contribute right away. All but five of the running backs drafted in the first round over the past 10 years averaged double-digit touches as rookies.

See below:

Ezekiel Elliott (2016) — 23.6 touches per game, 132.9 yards from scrimmage as a rookie

Leonard Fournette (2017) — 23.3 touches, 103.2 yards

Doug Martin (2012) — 23 touches, 120.4 yards

Trent Richardson (2012) — 21.2 touches, 87.8 yards

Chris Johnson (2008) — 19.6 touches, 99.2 yards

Todd Gurley (2015) — 19.2 touches, 99.5 yards

Knowshon Moreno (2009) — 17.2 touches, 72.5 yards

Melvin Gordon (2015) — 15.5 touches, 59.5 yards

Ryan Mathews (2010) — 15 touches, 68.6 yards

Jahvid Best (2010) — 14.3 touches, 65.1 yards

Mark Ingram (2011) — 13.3 touches, 52 yards

Christian McCaffrey (2017) — 12.3 touches, 67.8 yards

Jonathan Stewart (2008) — 12 touches, 55.2 yards

Beanie Wells (2009) — 11.7 touches, 58.5 yards

Darren McFadden (2008) — 10.9 touches, 60.3 yards

Donald Brown (2009) — 8.1 touches, 40.9 yards

CJ Spiller (2010) — 7 touches, 31.4 yards

Felix Jones (2008) — 5.3 touches, 46 yards*

Rashard Mendenhall (2008) — 5.2 touches, 18.7 yards*

David Wilson (2012) — 4.6 touches, 24.5 yards

*Mendenhall played only four games, Jones played six.

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AP/Winslow Townson

5. CORNERBACK

Stephon Gilmore: After a shaky start, emerged as one of the Patriots' best players a year ago.

Eric Rowe: Entering the final year of his rookie deal. Will have a chance to win the No. 2 job opposite Gilmore.

Jason McCourty (trade): Checked in as the No. 27 cornerback on Pro Football Focus' rankings last year (while playing for the winless Browns).

Duke Dawson (second round): Physical, compact corner who should compete for slot duties.

Jonathan Jones: Impressed in 2017, but suffered a season-ending injury in the AFC divisional round. If healthy, he'll compete with Dawson.

Cyrus Jones: Don't know what to expect here. Jones struggled as a rookie and missed his entire second season with a torn ACL.

Ryan Lewis: Practice squad player as a rookie. Has good size (6-0, 200) and upside.

Keion Crossan (seventh round): Ridiculous athleticism. Faces uphill climb to make the roster.

Jomal Wiltz: Practice squad player last year.

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AP/Tom Pennington

CORNERBACK ANALYSIS

Even after losing Malcolm Butler, this is a pretty strong group.

Gilmore is a bonafide No. 1 cornerback. McCourty seems to have some juice left at age 30. Rowe has great physical tools and should keep improving.

The team must be pleased with the development of Jonathan Jones, an undrafted free agent in 2016.

If Dawson is as advertised, there aren’t many deficiencies at this position.

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AP/Don Wright

4. TIGHT END

DEPTH CHART

Rob Gronkowski: Informed Bill Belichick that he'll be playing in 2018.

James Develin (FB): No competition on the 90-man roster for Develin. He's coming off his first Pro Bowl nomination.

Dwayne Allen: Due to make $5 million this season.

Will Tye: Didn't earn a promotion to the active roster in 2017, but might be the team's second-best tight end (at least as a pass-catcher). Totaled 90 combined receptions in 2015 and 2016 while playing for the Giants.

Jacob Hollister: Undrafted free agent who stuck in 2017. Talented pass-catcher with upside.

Troy Niklaus (free agent): A second-round pick in 2014, the 6-foot-6, 270-pound Niklaus looks to resurrect his career in New England.

Ryan Izzo (seventh round): Rookie out of Florida State is considered a strong in-line blocker.

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AP/Winslow Townson

TIGHT END ANALYSIS

Gronkowski’s health is paramount.

Unlike the 2016 season, there’s no Martellus Bennett behind Gronk.

Allen isn’t a lock to make the roster. Niklaus and Izzo will push him for a spot.

Tye and Hollister might be battling for one spot, too.

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AP/Keith Srakocic

3. SAFETY

Devin McCourty: One of the league's best at his position.

Duron Harmon: Remains to be seen if he will be disciplined for a marijuana incident in Costa Rica.

Patrick Chung: Signed an extension this offseason. Bill Belichick called him "one of the best players in the league" last year.

Jordan Richards: After a rough Super Bowl, Richards looks toward 2018. Has been a regular special teams contributor.

Nate Ebner (re-signed): Coming off a season-ending knee injury.

David Jones: Practice squad player a year ago.

Damarius Travis: Same boat as Jones. Could push Richards for a spot.

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AP/Winslow Townson

SAFETY ANALYSIS

This remains one of the Patriots’ strongest position groups.

McCourty and Chung are high-level starters at free safety and strong safety, respectively.

Harmon is a pseudo-starter whose deep-field capability allows the team to use McCourty in a variety of roles.

The only question mark here is Richards, who has contributed little defensively in his three years with the Pats.

Eventually, the Pats need to find a successor to Chung. It’s hard to envision Richards being that guy.

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AP/Matt Slocum

2. WIDE RECEIVER

DEPTH CHART

Julian Edelman: Tearing an ACL is brutal. But if there's any silver lining here, at least Edelman did it in the preseason. That gives him a full year to be ready for the 2018 season.

Chris Hogan: Entering the final year of his contract. Was on pace for a monster season in 2017 before suffering a shoulder injury.

Jordan Matthews (free agent): Led the NFL in receiving yards out of the slot (2,389) from 2014-16, according to Pro Football Focus.

Cordarrelle Patteson (trade): Incredible with the ball in his hands. Averages 2.6 touches per game (not including kickoffs) for his career. Let's see if the Pats can double that number.

Matthew Slater (re-signed): Special teams captain and one of the leaders of the team.

Malcolm Mitchell: Lost his 2017 season due to a knee injury. His health will be a major storyline this spring and summer.

Phillip Dorsett: Former first-round pick whose vertical speed could help him stick.

Kenny Britt: Just one year removed from a 1,000-yard season. Enormous for the position. Looks like he could be a defensive end.

Braxton Berrios (sixth round): Next Patriots slot guy? He's already drawing comparisons to Edelman and Danny Amendola.

Riley McCarron: Next Patriots slot guy? The Iowa Flash will need to beat out Berrios.

Cody Hollister: Uphill battle to make the roster after one year on the practice squad.

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AP/Keith Srakocic

WIDE RECEIVER ANALYSIS

This is a loaded position group.

Edelman is a lock. Barring anything crazy, Hogan should be on the roster, too.

Because of his track record and size in the slot, Matthews should stick. Patterson is one of the best returners in NFL history and will likely carve out a niche role on offense. Slater is in, too.

That’s five already. How many more can they keep?

Ideally, Mitchell would be in, but the Pats will have to see how his knee responds. They’d probably like to keep Berrios, too.

Unless injuries hit, it’s hard to see both Dorsett and Britt making the roster.

One player at the back of this group could end up being traded during training camp.

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AP/Charles Krupa

1. QUARTERBACK

DEPTH CHART

Tom Brady: Will be back at age 41, even if he's acting strange this offseason.

Brian Hoyer: Entering the second year of a three-year deal. The Patriots can bail on Hoyer without owing him a dime if they find a better option at backup.

Danny Etling (seventh round): Patriots director of player personnel Nick Caserio raved about Etling's decision-making (second-lowest interception rate in SEC history) during his post-draft press conference.

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AP/Wade Payne

QUARTERBACK ANALYSIS

This will always be one of the strongest positions on the team (if not the strongest) as long as Brady is around.

I mean, he just threw for 505 yards in the Super Bowl.

He's still at the top of his game.

At times, Hoyer has been a serviceable player in the league, but it’s hard to imagine the Pats succeeding if he’s forced into action. Problem is, there aren’t better options out there.

After expressing interest in making a move for Baker Mayfield, the Pats elected to pass up several high-profile quarterbacks in the draft. They settled on Etling, who is nothing more than a late-round flier.