RB Depth Charts

Legend:
Uncontested Feature Back - These are the RBs where I feel basically anything can happen and they will remain the starter. They can run for 5 yards in the first three games and I would feel confident they will remain atop the depth chart.
Receiving Back - RB that may not be starter but should get lots of action as a receiver out of the backfield
Questionable Status - RB atop the depth chart with some uncertainty, a very real possibility they could be overtaken.
Very Uncertain - #1 RB with serious concerns. Right now I've only given two backs that distinction based on dreadful performance. And in Ray Rice's case the possible suspension only makes it more uncertain.
High Upside/potential backup - Backup running backs that have a decent chance for carries if they have a good preseason and/or injuries occur higher up. Further, these are guys that could become very nice options should they become a bigger part of the offense.
Super Sleeper - Similar to the high upside backup with the exception that at best these guys are #3 on the depth charts, generally major road blocks in their way to getting playing time. Some of these guys are just UDFA's who may not even make a team, but I have read positive things and if they do end up on the roster, they are guys I feel are worth keeping on your radar.

NFC East

Dallas Cowboys:
1. Demarco Murray
2. Joseph Randle
3. Lance Dunbar
4. Ryan Williams

New York Giants
1. Rashad Jennings
2. Andre Williams
3. David Wilson
4. Peyton Hillis
5. Michael Cox

Philadelphia Eagles
1. LeSean McCoy
2. Darren Sproles
3. Chris Polk
4. David Fluellen
5. Henry Josey

Washington Redskins
1. Alfred Morris
2. Roy Helu
3. Lache Seastrunk
4. Evan Royster
5. Chris Thompson

NFC West

Arizona Cardinals
1. Andre Ellington
2. Stepfan Taylor
3. Jonathan Dwyer
4. Zach Bauman
5. Jalen Parmele


San Francisco 49ers
1. Frank Gore
2. Carlos Hyde
3. Kendall Hunter
4. Marcus Lattimore
5. LaMichael James

Seattle Seahawks
1. Marshawn Lynch
2. Christine Michael
3. Robert Turbin
4. Spencer Ware

St. Louis Rams
1. Zac Stacy
2. Tre Mason
3. Benny Cunningham
4. Isaiah Pead
5. Trey Watts

NFC North

Chicago Bears
1. Matt Forte
2. Ka'Deem Carey
3. Michael Ford
4. Jordan Lynch
5. Senorise Perry

Detroit Lions
1. Reggie Bush
2. Joique Bell
3. Theo Riddick
4. Mikel Leshoure
5. Montell Owens

Green Bay Packers
1. Eddie Lacy
2. James Starks
3. Johnathan Franklin
4. DuJuan Harris
5. Rajion Neal

Minnesota Vikings
1. Adrian Peterson
2. Jerick McKinnon
3. Matt Asiata
4. Joe Banyard

NFC South

Atlanta Falcons
1. Steven Jackson
2. Devonta Freeman
3. Jacquizz Rodgers
4. Jason Snelling
5. Antone Smith

Carolina Panthers
1. DeAngelo Williams
2. Jonathan Stewart
3. Mike Tolbert
4. Tyler Gaffney
5. Kenjon Barner

New Orleans Saints
1. Pierre Thomas
2. Khiry Robinson
3. Mark Ingram
4. Travaris Cadet
5. Tim Flanders

Tampa Bay Buccaneers
1. Doug Martin
2. Charles Sims
3. Mike James
4. Brendan Bigelow
5. Jeff Demps

AFC East

Buffalo Bills
1. C.J. Spiller
2. Fred Jackson
3. Bryce Brown
4. Anthony Dixon

Miami Dolphins
1. Knowshon Moreno
2. Lamar Miller
3. Daniel Thomas
4. Marcus Gillislee
5. Orleans Darkwa

New England Patriots
1. Stevan Ridley
2. Shane Vereen
3. Brandon Bolden
4. James White
5. Roy Finch

New York Jets
1. Chris Johnson
2. Chris Ivory
3. Daryl Richardson
4. Bilal Powell
5. Mike Goodson

AFC West

Denver Broncos
1. Montee Ball
2. Ronnie Hillman
3. C.J. Anderson
4. Kapri Bibbs
5. Brennan Clay

Kansas City Chiefs
1. Jamaal Charles
2. Knile Davis
3. De'Anthony Thomas
4. Cyrus Gray
5. Charcandrick West

Oakland Raiders
1. Maurice Jones-Drew
2. Darren McFadden
3. Marcel Reece
4. Kory Sheets
5. George Atkinson

San Diego Chargers
1. Ryan Mathews
2. Danny Woodhead
3. Donald Brown
4. Marion Grice
5. Branden Oliver

AFC North

Baltimore Ravens
1. Ray Rice
2. Bernard Pierce
3. Cierre Wood
4. Lorenzo Taliaferro
5. Fitzgerald Toussaint

Cincinnati Bengals
1. Giovani Bernard
2. Jeremy Hill
3. BenJarvus Green-Ellis
4. Cedric Peerman
5. James Wilder Jr.

Cleveland Browns
1. Ben Tate
2. Terrance West
3. Chris Ogbonnaya
4. Isaiah Crowell
5. Dion Lewis

Pittsburgh Steelers
1. Le'Veon Bell
2. LeGarrette Blount
3. Dri Archer
4. Alvester Alexander

AFC South

Houston Texans
1. Arian Foster
2. Andre Brown
3. Dennis Johnson
4. Alfred Blue

Indianapolis Colts
1. Trent Richardson
2. Ahmad Bradshaw
3. Vick Ballard
4. Dan Herron
5. Zurlon Tipton

Jacksonville Jaguars
1. Toby Gerhart
2. Jordan Todman
3. Storm Johnson
4. Denard Robinson
5. Terrance Cobb

Tennessee Titans
1. Bishop Sankey
2. Shonn Greene
3. Dexter McCluster
4. Antonio Andrews
5. Jackie Battle

If you want to know about a specific running back, feel free to comment. You're probably best asking someone that covers a team specifically, but I can certainly fill you in based on what I have read and my opinion.