Updated Sunday, Dec. 9 at 12:16 p.m. ET

Here are PFW's Week 14 RB rankings:

1. Adrian Peterson, Vikings vs. Bears
2. Trent Richardson, Browns vs. Chiefs
3. Arian Foster, Texans at Patriots
4. Chris Johnson, Titans at Colts
5. Doug Martin, Buccaneers vs. Eagles
6. Ray Rice, Ravens at Redskins
7. Bryce Brown, Eagles at Buccaneers
8. Marshawn Lynch, Seahawks vs. Cardinals
9. C.J. Spiller, Bills vs. Rams
10. Jamaal Charles, Chiefs at Browns
11. Alfred Morris, Redskins vs. Ravens
12. Ahmad Bradshaw, Giants vs. Saints
13. Frank Gore, 49ers vs. Dolphins
14. Matt Forte, Bears at Vikings
15. DeMarco Murray, Cowboys at Bengals
16. BenJarvus Green-Ellis, Bengals vs. Cowboys
17. Stevan Ridley, Patriots vs. Texans
18. Steven Jackson, Rams at Bills
19. Shonn Greene, Jets at Jaguars
20. Fred Jackson, Bills vs. Rams
21. Knowshon Moreno, Broncos at Raiders
22. Mikel Leshoure, Lions at Packers
23. Vick Ballard, Colts vs. Titans
24. Darren Sproles, Saints at Giants
25. Jonathan Dwyer, Steelers vs. Chargers
26. Darren McFadden, Raiders vs. Broncos
27. Michael Turner, Falcons at Panthers               
28. DeAngelo Williams, Panthers vs. Falcons
29. Ryan Mathews, Chargers at Steelers
30. Reggie Bush, Dolphins at 49ers
31. Jacquizz Rodgers, Falcons at Panthers
32. Bilal Powell, Jets at Jaguars
33. Joique Bell, Lions at Packers
34. Montell Owens, Jaguars vs. Jets
35. Alex Green, Packers vs. Lions
36. Michael Bush, Bears at Vikings (UP)
37. Beanie Wells, Cardinals at Seahawks                              INJ
38. Pierre Thomas, Saints at Giants
39. Mark Ingram, Saints at Giants
40. Isaac Redman, Steelers vs. Chargers
41. Marcel Reece, Raiders vs. Broncos
42. Chris Ivory, Saints at Giants
43. Ronnie Hillman, Broncos at Raiders
44. Daniel Thomas, Dolphins at 49ers
45. Felix Jones, Cowboys at Bengals
46. Shane Vereen, Patriots vs. Texans
47. Justin Forsett, Texans at Patriots
48. Peyton Hillis, Chiefs at Browns
49. Daryl Richardson, Rams at Bills
50. Mike Tolbert, Panthers vs. Falcons
51. Delone Carter, Colts vs. Titans
52. Bernard Pierce, Ravens at Redskins
53. Ben Tate, Texans at Patriots
54. Mike Goodson, Raiders vs. Broncos                                 INJ
55. Danny Woodhead, Patriots vs. Texans
56. Montario Hardesty, Browns vs. Chiefs
57. Ronnie Brown, Chargers at Steelers
58. Robert Turbin, Seahawks vs. Cardinals
59. John Kuhn, Packers vs. Lions
60. David Wilson, Giants vs. Saints
61. Dion Lewis, Eagles at Buccaneers
62. Brandon Jacobs, 49ers vs. Dolphins
63. LaRod Stephens-Howling, Cardinals at Seahawks
64. William Powell, Cardinals at Seahawks
65. Jonathan Stewart, Panthers vs. Falcons                           INJ                      
66. Cedric Peerman, Bengals vs. Cowboys                           INJ

Not listed: Donald Brown, Colts; Rashad Jennings, Jaguars; Maurice Jones-Drew, Jaguars; LeSean McCoy, Eagles; James Starks, Packers; Willis McGahee, Broncos

We base our rankings on the following scoring system: For skill-position players, one point for every 10 rushing/receiving yards, one point for every 30 passing yards, six points for a TD run or catch, four points for a TD pass, two points for a two-point conversion run or catch, two points for a two-point conversion pass. For kickers, three points for FGs of 18-39 yards, four points for FGs of 40-49 yards, and five points for FGs of 50-plus yards. Defensive rankings are based primarily on points allowed, yardage allowed and sack potential.

Glossary of notations

INJ — player has an injury that may affect productivity or availability.
ILL — player has an illness that may affect productivity or availability.
UP — player was moved up on draft board after original posting.
DOWN — player was moved down on draft board after original posting.
Not listed — player is temporarily sidelined due to injury or suspension but otherwise would be ranked.
ACTIVE — on game day, player has been designated active (posted shortly before kickoff, when available).
INACTIVE — on game day, player has been designated inactive (posted shortly before kickoff, when available).

Players and/or notations added after the original posting are shown in boldface.

Note: Remember to check back for late-week and weekend updates, as well as game inactives (when available) in the 90 minutes preceding the 1 p.m. Sunday kickoffs.