Here's a player-by-player look at the Minnesota Vikings' 53-man roster:
QUARTERBACK (3)
Teddy Bridgewater: Coming off an impressive preseason before his second year in the league. Vikings will go as he goes in 2015.
Shaun Hill: Bridgewater's backup started eight games for the Rams last year; the Vikings hope they're using him only as a mentor who gets occasional mop-up duty.
Taylor Heinicke: The Old Dominion product made the roster as an undrafted free agent after a solid preseason. He'll get a chance to develop behind Bridgewater and Hill.
RUNNING BACK (4)
Adrian Peterson: Back from suspension and planning to prove he's still the best running back in the league at age 30, Peterson gives the Vikings what they didn't have last year: a playmaker defenses have to account for at all times.
Jerick McKinnon: He'll see a reduced role with Peterson back; he was ineffective in preseason, but the Vikings think he'll be a solid weapon, particularly in the passing game.
Matt Asiata: Should also see a smaller role after scoring 10 TDs last year; he's reliable, strong in pass protection, good in the flat and valuable on special teams.
Zach Line: Vikings didn't use a fullback much last year, but he can contribute as a receiver more than Jerome Felton could.
WIDE RECEIVER (6)
Mike Wallace: Bridgewater will look for him down the field, but also on screens; Wallace has been one of the league's most productive receivers on short throws in recent years.
Charles Johnson: Could be poised for a breakout year after catching 31 passes last season. He had a strong preseason and will start at split end.
Jarius Wright: Should line up in the slot, among other spots, in three-receiver sets; coming off the best year of his career.
Adam Thielen: He has gone from practice squad player to special teams overachiever to a receiver who didn't need to play in the final preseason game because his spot was secure. Can he contribute more to the offense this year?
Cordarrelle Patterson: Kick return TD against Dallas showed what a dynamic return man he still is; his chances to be more than that could be running out.
Stefon Diggs: Stood out as receiver and return man in preseason; Vikings love his potential for big plays after the catch.
TIGHT END (4)
Kyle Rudolph: Had a relatively quiet preseason, but is hoping for big season now that he has fully recovered from last year's sports hernia.
Rhett Ellison: Vikings' jack-of-all trades will see time at tight end and at fullback; he has been better as a run-blocker than in pass protection.
MyCole Pruitt: Has the size to block, the speed and body control to be a receiver. Norv Turner has high hopes for the rookie.
Chase Ford: Made the team as a fourth tight end after a strong preseason; caught 23 balls a year ago and could be a solid red-zone target.
OFFENSIVE LINE (9)
Matt Kalil: Vikings are counting on him to rebound from a poor 2014 season now that his knees are healthy.
Brandon Fusco: Moved to the left side after recovering from torn pectoral muscle; physical blocker who should help Kalil.
John Sullivan: If his back spasms hurt his availability, it'll be a problem for the Vikings; smart, mobile lineman who was a valuable asset to Bridgewater in setting protections.
Mike Harris: Playing guard for the first time on a regular basis; he'll start on the right side between Sullivan and rookie T.J. Clemmings.
T.J. Clemmings: Filling in for Phil Loadholt at right tackle; looked solid in the preseason and could lock down the job for the future if he has a good rookie season.
Joe Berger: Will start at center if Sullivan's back is an issue; capable backup at several interior spots.
Zac Kerin: Can play several interior spots; made team after spending 2014 on practice squad.
Austin Shepherd: Worked at guard and tackle during OTAs; had a much better camp than fellow draft pick Tyrus Thompson.
Jeremiah Sirles: Should add depth at a pair of spots after Vikings acquired him from San Diego in a Saturday trade.
DEFENSIVE LINE (9)
Everson Griffen: One of the keys to the Vikings' pass rush after a 12-sack season a year ago, and solid against the run.
Sharrif Floyd: He flashed his impressive quickness a few times during the preseason; Vikings need him to be consistent and stay healthy.
Linval Joseph: In a better spot than he was a year ago, when he missed the whole preseason after getting hit in the leg by a bullet.
Brian Robison: At age 32, he'll be asked to play a major role in the defense, especially if young defensive ends aren't ready.
Shamar Stephen: Coming back from a minor knee operation; he'll be asked to spell Joseph at nose tackle.
Tom Johnson: Slippery inside pass-rusher had an impressive preseason after 6.5 sacks last year got him a contract extension.
Danielle Hunter: Third-round pick with freakish athleticism started to surge at the end of the preseason; doesn't turn 21 until October.
Justin Trattou: He made the roster because of a productive preseason and will be asked to pressure the quarterback from several different spots.
Scott Crichton: Had what amounted to a redshirt year as a rookie; now he'll look to carve out a role in a defensive end rotation.
LINEBACKER (6)
Chad Greenway: Elder statesman of the group will start on the weak side, but he could see his role diminish in the nickel package.
Anthony Barr: Poised for a surge in his second season, as long as his knee issues don't flare up.
Eric Kendricks: Fast, instinctive linebacker could see plenty of playing time in the nickel as a rookie.
Gerald Hodges: Vikings ended preseason with him starting at middle linebacker in base defense.
Audie Cole: Will be next in line at middle linebacker if Hodges falters and figures to be first backup at outside spots.
Edmond Robinson: Seventh-round pick is a project, but he was too athletic for the Vikings to risk losing him, and he has improved.
CORNERBACK (5)
Xavier Rhodes: Vikings are counting on him to be a shutdown corner in his third season.
Terence Newman: Figures to start at left cornerback at age 37, at least until Trae Waynes is ready.
Trae Waynes: Vikings won't hold him back longer than neceessary -- and if there's an injury, he'll have to step in early.
Captain Munnerlyn: Should play mostly slot cornerback in nickel situations, though he's one of Vikings' best run-stoppers as a corner.
Marcus Sherels: Made the team largely because of his punt returning skills; he'll hold down that job for the fourth straight season.
SAFETY (4)
Harrison Smith: Becoming one of the league's best at his position; Vikings will use him all over the field in Year 4.
Robert Blanton: He has remained the starter because others haven't beaten him out; will try to hold his job in contract year.
Andrew Sendejo: Hasn't been able to overtake Blanton at safety and remains on roster mostly because of special teams.
Antone Exum: Has more playmaking ability than Blanton or Sendejo, but will need to show consistency to overtake either one.
SPECIALISTS (3)
Blair Walsh: Enters the season in a funk after hitting 5 of 11 field goals in preseason. Vikings will stand by him, but can he snap out of slump?
Jeff Locke: Punted more consistently in the preseason after two subpar years.
Kevin McDermott: Beat out Cullen Loeffler in training camp for long-snapper job.