Here's a player-by-player look at the Dallas Cowboys' 53-man roster:
QUARTERBACK (2)
Tony Romo: He is healthier than he has been in two years and looks primed to have another big season.
Brandon Weeden: He is in the second year in the same system for the first time in his career, but the hope is he doesn't have to take a meaningful snap all season.
RUNNING BACK (5)
Joseph Randle: He has been the leader of the committee since the offseason began and will get the chance to be that guy throughout the season.
Darren McFadden: After seven years in Oakland, the Cowboys are hoping his speed comes through.
Lance Dunbar: This season, the Cowboys swear, will be the season Dunbar gets the ball more on third-down chances, but will they follow through?
Christine Michael: Another runner to add to the committee, but it will be hard for him to get a lot of work, at least early in the season.
Tyler Clutts: He is a dependable player whom the coaches trust in a lot of situations.
TIGHT END (4)
Jason Witten: Entering his 13th year, he is not showing any signs of slowing down as an overall player.
James Hanna: He was slowed the past two weeks of the preseason with a knee injury but is expected to be back to practice this week.
Gavin Escobar: The former second-round pick remains a niche player but will be a factor in the red zone and running the seams.
Geoff Swaim: The seventh-round pick caught attention in the spring and carried that over to training camp, but how does he get on the 46-man roster?
WIDE RECEIVER (5)
Dez Bryant: He did not play in the preseason because of a hamstring strain, but the team has no worries about him being ready against the New York Giants.
Terrance Williams: He had a solid offseason and closed the preseason strong but will have to win one-on-one matchups all season with the attention paid to Bryant.
Cole Beasley: He was arguably the Cowboys' best offensive player in training camp and could have a career year as the slot receiver.
Devin Street: He had some moments in the summer but had trouble getting over a nagging ankle injury. He was active every game as a rookie, but that might not be the case this season.
Lucky Whitehead: He earned a spot with his work at a couple of different receiver spots as well as in the return game.
OFFENSIVE LINE (8)
Tyron Smith: He is the best young tackle in the game, and he is only entering his fifth season.
Ronald Leary: He made sure not to give La'el Collins a chance to win the left guard job with an excellent training camp.
Travis Frederick: Coming off a Pro Bowl season, he has developed into one of the NFL's best centers.
Zack Martin: He became the Cowboys' first rookie All Pro since 1969 last season and has the look of a star up front. He missed three preseason games with a stinger.
Doug Free: The right tackle's offseason was slowed because of foot surgery, but he played better as the summer wore on.
Mackenzy Bernadeau: His versatility helps him keep a roster spot with his ability to play all three interior spots.
La'el Collins: The most-heralded undrafted signing will have to earn his keep and has signs of a bright future, but people need patience.
Darrion Weems: He takes over the swing tackle role held the past three years by Jermey Parnell, but there are questions about his readiness.
DEFENSIVE LINE (10)
DeMarcus Lawrence: He came on strong in the playoffs last season, and that confidence has carried over to his second year in a move to left defensive end.
Tyrone Crawford: The Cowboys believe he is a star in the making and view him as a cornerstone piece of their defense as he enters the final year of his contract.
Nick Hayden: He is criticized by many, but the coaches love his work and leadership.
Jeremy Mincey: He led the Cowboys in sacks last season with six and brings some leadership and wisdom to the room.
Randy Gregory: He might be the steal of the draft if he produces in the regular season the way he produced in the preseason. He might be a better all-around player than many thought.
Jack Crawford: A broken thumb ended his season early last year, but he can produce from the tackle and end positions.
Terrell McClain: If he can stay healthy, he can be a disruptive player on the interior. But he has had a hard time staying healthy.
Davon Coleman: He has the talent to be a decent part of the rotation, but his focus waned last season after making the roster as an undrafted free agent. He can't let that happen again this year.
Ken Bishop: He might not possess the pass rush Rod Marinelli craves, but he is stout against the run and gives the Cowboys needed bulk.
Ryan Russell: The fifth-round pick was always hearing it from Marinelli in camp. The Cowboys see athleticism but want to see more consistency.
LINEBACKER (7)
Sean Lee: His comeback from a torn ACL is almost complete. He played in one preseason game and has said the knee feels strong. Can he last a full season?
Andrew Gachkar: He was an unheralded free-agent signing but has showed the ability to play all three spots and could be the opening day middle linebacker.
Kyle Wilber: He should open the season at strong-side linebacker. He is dependable, if unspectacular, with his main role coming on special teams.
Anthony Hitchens: A foot sprain has kept him off the field for three weeks, but there is some hope for the opener. If he is healthy, he could start in the middle.
Damien Wilson: He started off strong in camp but slowed a little late, which can happen to rookies, but he has the athleticism to play all three spots.
Jasper Brinkley: The veteran made the roster for now but is not guaranteed a spot when Rolando McClain comes back from suspension.
Keith Smith: He re-joined the team early in camp and played his way on to the roster in part because of his special teams' ability.
SECONDARY (9)
Brandon Carr: His future was much talked about in the offseason, but he remains and the Cowboys need him to play the way he did the final six weeks of last season.
Morris Claiborne: With Orlando Scandrick out for the year with a knee injury, the former first-round pick in 2012 gets his last chance to show why he was picked so high. His comeback from a torn patellar has gone better than expected.
Barry Church: The leader of the secondary with actions perhaps more than words, the Cowboys need more big plays from him in 2015.
J.J. Wilcox: He is still growing into the position but has the tools to be solid.
Tyler Patmon: All eyes will be on him because he takes over for Scandrick in the slot. He is feisty.
Byron Jones: The first-round pick might be more of a safety than a corner, but his versatility helps Marinelli juggle different defensive packages.
Corey White: Like Jones, he can play safety and he can also play slot corner if needed. The Cowboys might have a nice find after New Orleans let him go.
Jeff Heath: He is a core special teamer, but his work over the summer was slowed because of a concussion.
Danny McCray: He returned to the Cowboys after a one-year run in Chicago and is in much the same role as when he left: special teamer.
SPECIALISTS (3)
L.P. Ladouceur: He has not had a bad snap since he joined the Cowboys in 2005. That's quite a long run.
Dan Bailey: He is one of the NFL's best kickers and never seems to let the pressure get to him.
Chris Jones: He had his best camp of his career and possesses a strong left leg.