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D'Brickashaw Ferguson: B
The Jets' mainstay at left tackle did not have quite the dominant season that we have come to expect from him, but he was far from a liability protecting Geno Smith's blind side.
Now 30 years old, we may be seeing the decline of Ferguson, but he still has several more years of good football left in him if he can stay healthy.
Brian Winters: D
Winters gets a lot of flak for his play at left guard, and rightfully so—he was by far the biggest liability on the Jets line. There were countless times in which a promising drive was stalled because the rookie was beat cleanly in simple one-on-one situations.
The good news is that Winters was able to get 11 games of experience this year, but the Jets need to see improvement next year if he is going to retain his starting job.
Nick Mangold: B-
Mangold has a reputation as being one of the best centers in the league, but he saw a significant drop in his production this season, especially in the run game, grading out as one of the worst centers in the league in that department in Pro Football Focus' rankings (subscription required).
He was still solid as a pass-protector, but perhaps a nagging injury that went unreported led to his sharp decline in the run game. Next season will tell us whether or not this season was a blip on the radar or a sign of permanent decline.
Willie Colon: B
One of several bargain buys John Idzik made this offseason, Colon provided great value as the starting right guard all season. He was arguably the Jets' best lineman in pass protection, but like Mangold, he struggled against the run for most of the season.
The best part of Colon's year was that he was able to finish all 16 games without any major incident, contrary to the majority of his career.
Austin Howard: A-
The Jets right tackle may not sell many jerseys, but he has arguably been the Jets' best offensive player this year. He was their best run-blocker and only allowed two sacks all season.
Howard is set to be a free agent this offseason, but look for the Jets to try to get him signed to a long-term deal.