Updated 12:15 p.m. ET, Sunday, Dec. 22

Here are PFW's Week 16 QB rankings:

1. Tom Brady, Patriots at Jaguars
2. Drew Brees, Saints at Cowboys
3. Aaron Rodgers, Packers vs. Titans
4. Cam Newton, Panthers vs. Raiders
5. Peyton Manning, Broncos vs. Browns
6. Matt Ryan, Falcons at Lions
7. Tony Romo, Cowboys vs. Saints
8. Robert Griffin III, Redskins at Eagles 
9. Ben Roethlisberger, Steelers vs. Bengals
10. Andrew Luck, Colts at Chiefs
11. Matthew Stafford, Lions vs. Falcons
12. Andy Dalton, Bengals at Steelers
13. Matt Schaub, Texans vs. Vikings
14. Josh Freeman, Buccaneers vs. Rams
15. Colin Kaepernick, 49ers at Seahawks
16. Sam Bradford, Rams at Buccaneers
17. Carson Palmer, Raiders at Panthers
18. Russell Wilson, Seahawks vs. 49ers
19. Eli Manning, Giants at Ravens
20. Nick Foles, Eagles vs. Redskins
21. Philip Rivers, Chargers at Jets
22. Ryan Tannehill, Dolphins vs. Bills
23. Brandon Weeden, Browns at Broncos
24. Jake Locker, Titans at Packers
25. Chad Henne, Jaguars vs. Patriots
26. Joe Flacco, Ravens vs. Giants
27. Ryan Fitzpatrick, Bills at Dolphins
28. Jay Cutler, Bears at Cardinals
29. Christian Ponder, Vikings at Texans
30. Greg McElroy, Jets vs. Chargers (ADDED)
31. Brady Quinn, Chiefs vs. Colts                             
32. Ryan Lindley, Cardinals vs. Bears

Not listed: none

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.