Pro Football Focus released its end of season offensive line rankings. How did they rank the Panthers?

PFF RANKINGS FOR ALL 32 NFL OFFENSIVE LINES — 2016 SEASON

1. Tennessee Titans (Preseason rank: 25) Top overall grade: RT Jack Conklin, 88.9 (No. 5 among OTs)

2. Dallas Cowboys (1) Top overall grade: C Travis Frederick, 90.0 (No. 3 among centers)

3. Pittsburgh Steelers (14) Top overall grade: RT Marcus Gilbert (No. 13)

4. Oakland Raiders (2) Top overall grade: C Rodney Hudson, 88.7 (No. 4)

5. Green Bay Packers (3) Top overall grade: LT David Bakhtiari, 89.9 (No. 3)

6. Atlanta Falcons (5) Top overall grade: C Alex Mack, 90.5 (No. 2)

7. Washington Redskins (12) Top overall grade: LT Trent Williams, 92.8 (No. 1)

8. Philadelphia Eagles (7) Top overall grade: LT Jason Peters, 88.3 (No. 7)

9. Baltimore Ravens (13) Top overall grade: LG Marshal Yanda, 92.0 (No. 1)

10. New England Patriots (18) Top overall grade: LT Nate Solder, 88.0 (No. 8)

11. Buffalo Bills (10) Top overall grade: LG Richie Incognito, 87.2 (No. 5)

12. New Orleans Saints (8) Top overall grade: RT Zach Strief, 86.8 (No. 14)

13. Cincinnati Bengals (4) Top overall grade: LT Andrew Whitworth, 91.3 (No. 2)

14. Kansas City Chiefs (17) Top overall grade: C Mitch Morse, 82.5 (No. 14)

15. Chicago Bears (30) Top overall grade: C Cody Whitehair, 87.2 (No. 6)

16. Cleveland Browns (21) Top overall grade: LT Joe Thomas, 89.1 (No. 4)

**17. Carolina Panthers (6) Top overall grade: LG Andrew Norwell, 85.7 (No. 11)

18. Houston Texans (11) Top overall grade: LT Duane Brown, 85.7 (No. 17)

19. Detroit Lions (22) Top overall grade: LT Taylor Decker, 82.8 (No. 23)

20. New York Giants (20) Top overall grade: LG Justin Pugh, 85.1 (No. 16)

21. New York Jets (24) Top overall grade: LG James Carpenter, 83.0 (No. 17)

22. Jacksonville Jaguars (23) Top overall grade: C Brandon Linder, 87.6 (No. 5)

23. Tampa Bay Buccaneers (27) Top overall grade: RG Ali Marpet, 84.5 (No. 14)

24. Denver Broncos (28) Top overall grade: C Matt Paradis, 90.7 (No. 2)

25. Indianapolis Colts (16) Top overall grade: LT Anthony Castonzo, 84.2 (No. 20)

26. Arizona Cardinals (9) Top overall grade: C A.Q. Shipley, 82.4 (No. 15)

27. Los Angeles Rams (31) Top overall grade: LG Roger Saffold, 80.7 (No. 26)

28. San Francisco 49ers (26) Top overall grade: LT Joe Staley, 81.4 (No. 24)

29. Minnesota Vikings (15) Top overall grade: C Joe Berger, 85.0 (tied for No. 7)

30. Miami Dolphins (19) Top overall grade: RT Ja’Wuan James, 78.0 (No. 32)

31. San Diego Chargers (29) Top overall grade: C Matt Slauson, 81.2 (No. 19)

32. Seattle Seahawks (32) Top overall grade: C Justin Britt, 80.5 (No. 16)

PFF explains:

The loss of Michael Oher doesn’t seem like a huge deal until you consider that it puts Mike Remmers at left tackle, where he was simply out of his depth.

Remmers gave up nine sacks and 49 total QB pressures this season, and was also flagged 15 times. Remmers’ move also opened up another problem position at right tackle. Daryl Williams wasn’t able to make that spot his own, and RG Trai Turner struggled badly when he was moved out there for three games late in the season.

Turner’s season was a huge drop in quality from 2015; he was flagged four times more than last year, surrendering twice the number of sacks and 19 additional QB pressures, while not having nearly the same impact as a run blocker.

This is a team that needs an injection of talent at the tackle position, but just getting everybody back in their regular positions likely will help significantly.