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GLENDALE, AZ - SEPTEMBER 02:  Defensive tackle Albert Haynesworth #92 of the Washington Redskins battles for position with Alan Faneca #66 of the Arizona Cardinals during preseason NFL game at the University of Phoenix Stadium on September 2, 2010 in Glen
GLENDALE, AZ - SEPTEMBER 02: Defensive tackle Albert Haynesworth #92 of the Washington Redskins battles for position with Alan Faneca #66 of the Arizona Cardinals during preseason NFL game at the University of Phoenix Stadium on September 2, 2010 in GlenChristian Petersen/Getty Images

NFL Report Cards: Every Team's Offensive Line Through Week 13

Adam FromalDec 9, 2010

The offensive line is one of the most under-publicized yet important positions on the football field. 

A good or bad offensive line can single-handedly affect the outcome of a game. 

Whether it's preventing sacks or opening up gaping holes for the running back to burst through, the benefit of a dominant offensive line is unbelievable. 

Read on to find out just how good or bad each offensive line in the NFL has been. 

Arizona Cardinals

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CHICAGO - NOVEMBER 08: Adewale Ogunleye #93 of the Chicago Bears rushes against Levi Brown #75 of the Arizona Cardinals at Soldier Field on November 8, 2009 in Chicago, Illinois. The Cardinals defeated the Bears 41-21. (Photo by Jonathan Daniel/Getty Imag
CHICAGO - NOVEMBER 08: Adewale Ogunleye #93 of the Chicago Bears rushes against Levi Brown #75 of the Arizona Cardinals at Soldier Field on November 8, 2009 in Chicago, Illinois. The Cardinals defeated the Bears 41-21. (Photo by Jonathan Daniel/Getty Imag

The Arizona Cardinals offensive line, from left to right, is made up of Levi Brown, Alan Faneca, Lyle Sendlein, Deuce Lutui, and Jeremy Bridges. 

So far this season, they've been one of the worst units in the NFL. 

The line is allowing their running backs to rush for 4.3 yards per carry, 12th in the NFL, so they aren't that bad at run blocking. 

But the pass protection is an entirely different story. 

They've allowed 40 sacks so far this season, the second-most in the NFL. The 72 times that their quarterback has been hit is the sixth-worst total in the league. 

Grade: C-

Atlanta Falcons

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NEW ORLEANS - SEPTEMBER 26:  Justin Blalock  of the Atlanta Falcons in action against the New Orleans Saints at the Louisiana Superdome on September 26, 2010 in New Orleans, Louisiana.  The Falcons defeated the Saints 27-24.  (Photo by Chris Graythen/Gett
NEW ORLEANS - SEPTEMBER 26: Justin Blalock of the Atlanta Falcons in action against the New Orleans Saints at the Louisiana Superdome on September 26, 2010 in New Orleans, Louisiana. The Falcons defeated the Saints 27-24. (Photo by Chris Graythen/Gett

The Atlanta Falcons offensive line, from left to right, is made up of Sam Baker, Justin Blalock, Todd McClure, Harvey Dahl, and Tyson Clabo. 

Part of the reason the Falcons have been so successful is this line. 

They've not been great at blocking for the run as Atlanta has averaged 4.0 yards per carry, good for 17th in the NFL. 

But the pass protection is much better. 

The Falcons have only allowed 17 sacks all year, third best in the league. Also, Matt Ryan has only been hit 45 times, which places the line sixth in that category.

Grade: A

Baltimore Ravens

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BALTIMORE, MD - DECEMBER 05:  Tackle Michael Oher #74 of the Baltimore Ravens looks on from the bench during the game against the Pittsburgh Steelers at M&T Bank Stadium on December 5, 2010 in Baltimore, Maryland.  (Photo by Larry French/Getty Images)
BALTIMORE, MD - DECEMBER 05: Tackle Michael Oher #74 of the Baltimore Ravens looks on from the bench during the game against the Pittsburgh Steelers at M&T Bank Stadium on December 5, 2010 in Baltimore, Maryland. (Photo by Larry French/Getty Images)

The Baltimore Ravens offensive line, from left to right, is made up of Michael Oher, Ben Grubbs, Matt Birk, Chris Chester, and Marshal Yanda.

The line hasn't really been one of the strongest parts of the Ravens team this year. 

They're only allowing their running backs to gain 3.6 yards per carry, the third worst average in the league. 

And the pass protection is mediocre.

Joe Flacco has been sacked 27 times this year, 13th most in the league. That number is consistent with the amount of times he's been hit, 55, which is also the 13th most.

Grade: B- 

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Buffalo Bills

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EAST RUTHERFORD, NJ - OCTOBER 18:  Eric Wood #70 of The Buffalo Bills in action against The New York Jets during their game on October 18, 2009 at Giants Stadium in East Rutherford, New Jersey.  (Photo by Al Bello/Getty Images)
EAST RUTHERFORD, NJ - OCTOBER 18: Eric Wood #70 of The Buffalo Bills in action against The New York Jets during their game on October 18, 2009 at Giants Stadium in East Rutherford, New Jersey. (Photo by Al Bello/Getty Images)

The Buffalo Bills offensive line, from left to right, is made up of Demetrius Bell, Andy Levitre, Geoff Hangartner, Eric Wood, and Mansfield Wrotto.

Surprisingly for a team that has been as bad as the Bills have been this year, their offensive line hasn't been that bad. 

Even though they've allowed 71 hits on their quarterback, the seventh most in the league, they've only allowed 24 sacks, which places them right in the middle of the league.

As for the running game, they've allowed an average yards per carry of 4.4, the ninth best number in the NFL.

Grade: B

Carolina Panthers

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CHARLOTTE, NC - OCTOBER 24:  Jordan Gross #69 of the Carolina Panthers against the San Francisco 49ers during their game at Bank of America Stadium on October 24, 2010 in Charlotte, North Carolina.  (Photo by Streeter Lecka/Getty Images)
CHARLOTTE, NC - OCTOBER 24: Jordan Gross #69 of the Carolina Panthers against the San Francisco 49ers during their game at Bank of America Stadium on October 24, 2010 in Charlotte, North Carolina. (Photo by Streeter Lecka/Getty Images)

The Carolina Panthers offensive line, from left to right, is made up of Jordan Gross, Mackenzy Bernadeau, Ryan Kalil, Geoff Schwartz, and Garry Williams.

As you may expect from a 1-11 team, the offensive line isn't very good. 

The rushing game is only averaging 4.0 yards per carry, the 20th best number in the league. 

The pass blocking is even worse. Carolina has allowed 36 sacks and 78 quarterback hits this season, the third and second highest totals respectively. 

Grade: F

Chicago Bears

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CHICAGO - NOVEMBER 28: (L-R) J'Marcus Webb #73 and Roberto Garza #63 of the Chicago Bears await the snap of Olin Kreutz #57 against the Philadelphia Eagles at Soldier Field on November 28, 2010 in Chicago, Illinois. The Bears defeated the Eagles 31-26. (P
CHICAGO - NOVEMBER 28: (L-R) J'Marcus Webb #73 and Roberto Garza #63 of the Chicago Bears await the snap of Olin Kreutz #57 against the Philadelphia Eagles at Soldier Field on November 28, 2010 in Chicago, Illinois. The Bears defeated the Eagles 31-26. (P

The Chicago Bears offensive line, from left to right, is made up of Frank Omiyale, Chris Williams, Olin Kreutz, Roberto Garza, and J'Marcus Webb. 

They haven't exactly done so well this season.

The team is only allowing their running backs to gain 3.9 yards per carry this season, tying them with the Dallas Cowboys for 23rd. 

As for the pass protection, the Bears might need to go look that term up. 

The unit has allowed 45 sacks this season, five more than anyone else in the league.

Grade: F

Cincinnati Bengals

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PITTSBURGH - NOVEMBER 15: Nate Livings #62  of the Cincinnati Bengals lead blocks for Brian Leonard #40 against the Pittsburgh Steelers at Heinz Field on November 15, 2009 in Pittsburgh, Pennsylvania.  The Bengals won 18-12.(Photo by Rick Stewart/Getty Im
PITTSBURGH - NOVEMBER 15: Nate Livings #62 of the Cincinnati Bengals lead blocks for Brian Leonard #40 against the Pittsburgh Steelers at Heinz Field on November 15, 2009 in Pittsburgh, Pennsylvania. The Bengals won 18-12.(Photo by Rick Stewart/Getty Im

The Cincinnati Bengals offensive line, from left to right, is made up of Andrew Whitworth, Nate Livings, Kyle Cook, Bobbie Williams, and Dennis Roland. 

Unsurprisingly, the Bengals line hasn't been so great this year. 

They've allowed 25 sacks on 65 quarterback hits, good for 16th best (or worst depending on how you look at it) in the NFL. 

However, their run blocking has been atrocious. The Bengals line has only helped their backs to a terrible 3.7 yards per carry average. Only three teams in the NFL are worse. 

Grade: C

Cleveland Browns

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CHICAGO - NOVEMBER 01: John St. Clair #78 of the Cleveland Browns sits on the bench during a game against the Chicago Bears at Soldier Field on November 1, 2009 in Chicago, Illinois. The Bears defeated the Browns 30-6. (Photo by Jonathan Daniel/Getty Imag
CHICAGO - NOVEMBER 01: John St. Clair #78 of the Cleveland Browns sits on the bench during a game against the Chicago Bears at Soldier Field on November 1, 2009 in Chicago, Illinois. The Bears defeated the Browns 30-6. (Photo by Jonathan Daniel/Getty Imag

The Cleveland Browns offensive line, from left to right, is made up of Joe Thomas, Eric Steinbach, Alex Mack, Shawn Lauvao, and John St. Clair. 

They make up a pretty middle-of-the-pack unit. 

Despite having one of the better backs in the country, Peyton Hillis, the offensive line is still only getting 4.0 yards per carry out of their backfield. That ranks 18th in the league. 

As for the pass protection, the Browns have allowed 27 sacks, 14th worst in the league, on 47 quarterback hits, seventh best in the league. 

Grade: B

Dallas Cowboys

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SAN DIEGO - AUGUST 21:  Andre Gurode #65, Leonard Davis #70 and Robert Brewster #79 of the Dallas Cowboys in action during the pre-season NFL football game against San Diego Chargers at Qualcomm Stadium on August 21, 2010 in San Diego, California.  (Photo
SAN DIEGO - AUGUST 21: Andre Gurode #65, Leonard Davis #70 and Robert Brewster #79 of the Dallas Cowboys in action during the pre-season NFL football game against San Diego Chargers at Qualcomm Stadium on August 21, 2010 in San Diego, California. (Photo

The Dallas Cowboys offensive line, from left to right, is made up of Doug Free, Kyle Kosier, Andre Gurode, Leonard Davis, and Marc Colombo.

This unit has been strong in terms of pass protection, but not so much when blocking for the running backs. 

Dallas has only allowed 21 sacks all year, the eighth lowest total in the NFL. This has come along with 55 quarterback hits, a middle-of-the-road number. 

As for the run blocking, Dallas backs are only averaging 3.9 yards per carry, 23rd best in the league. 

Grade: B+

Denver Broncos

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DENVER - AUGUST 21:  Rookie offensive guard Zane Beadles #68 of the Denver Broncos blocks Chima Ihekwoaba of the Detroit Lions as he protects quarterback Brady Quinn #9 during preseason NFL action at INVESCO Field at Mile High on August 21, 2010 in Denver
DENVER - AUGUST 21: Rookie offensive guard Zane Beadles #68 of the Denver Broncos blocks Chima Ihekwoaba of the Detroit Lions as he protects quarterback Brady Quinn #9 during preseason NFL action at INVESCO Field at Mile High on August 21, 2010 in Denver

The Denver Broncos offensive line, from left to right, is made up of Ryan Clady, Zane Beadles, J.D. Walton, Chris Kuper, and Ryan Harris. 

As far as their success, they're one of the reasons that the Broncos have been rather disappointing this year. 

Allowing their running backs to run for 3.8 yards per carry, the line ranks 25th in the league. 

The pass blocking hasn't been much better as the 33 sacks allowed are the sixth highest total.

Grade: C-

Detroit Lions

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EAST RUTHERFORD, NJ - OCTOBER 17: Jeff Backus #76 of the Detroit Lions against the New York Giants at New Meadowlands Stadium on October 17, 2010 in East Rutherford, New Jersey.  (Photo by Nick Laham/Getty Images)
EAST RUTHERFORD, NJ - OCTOBER 17: Jeff Backus #76 of the Detroit Lions against the New York Giants at New Meadowlands Stadium on October 17, 2010 in East Rutherford, New Jersey. (Photo by Nick Laham/Getty Images)

The Detroit Lions offensive line, from left to right, is made up of Jeff Backus, Rob Sims, Dominic Raiola, Stephen Peterman, and Gosder Cherilus. 

They are another team that has struggled while run blocking but been rather successful when the quarterback drops back to pass. 

The 3.7 yards that running backs have averaged is the fourth worst average in the league. 

However, the pass blocking has allowed only 22 sacks, the 11th fewest in the league.

Grade: B

Green Bay Packers

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SEATTLE - AUGUST 21:  Defensive end Chris Clemons #91 of the Seattle Seahawks battles Bryan Bulaga #75 during the preseason game against the Green Bay Packers at Qwest Field on August 21, 2010 in Seattle, Washington. (Photo by Otto Greule Jr/Getty Images)
SEATTLE - AUGUST 21: Defensive end Chris Clemons #91 of the Seattle Seahawks battles Bryan Bulaga #75 during the preseason game against the Green Bay Packers at Qwest Field on August 21, 2010 in Seattle, Washington. (Photo by Otto Greule Jr/Getty Images)

The Green Bay Packers offensive line, from left to right, is made up of Chad Clifton, Daryn Colledge, Scott Wells, Josh Sitton, and Bryan Bulaga.

As far as both the run and pass blocking goes, the Packers line has been quite average. 

The Packers have allowed the 17th fewest sacks in the league, allowing Aaron Rodgers to go down 25 times. 

They also rank 17th in rushing average as their backs have run for 4.0 yards per carry. 

Grade: B

Houston Texans

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ORCHARD PARK, NY - NOVEMBER 01:  Antoine Caldwell #62 of the Houston Texans looks on during the game against the Buffalo Bills at Ralph Wilson Stadium on November 1, 2009 in Orchard Park, New York. Houston won 31-10. (Photo by Rick Stewart/Getty Images)
ORCHARD PARK, NY - NOVEMBER 01: Antoine Caldwell #62 of the Houston Texans looks on during the game against the Buffalo Bills at Ralph Wilson Stadium on November 1, 2009 in Orchard Park, New York. Houston won 31-10. (Photo by Rick Stewart/Getty Images)

The Houston Texans offensive line, from left to right, is made up of Duane Brown, Wade Smith, Chris Myers, Antoine Caldwell, and Eric Winston.

This line has been one of the better ones in the league. 

The running game has averaged 4.8 yards per carry, the third best in the league. 

As for the pass blocking, they've only allowed 26 sacks, the 18th fewest in the league. 

Grade: A-

Indianapolis Colts

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TORONTO, CANADA - AUGUST 19: Antonio Coleman #59 of the Buffalo Bills battles with Ryan Diem #71 of the Indianapolis Colts during game action August 19, 2010 at the Rogers Centre in Toronto, Ontario, Canada. (Photo by Brad White/Getty Images)
TORONTO, CANADA - AUGUST 19: Antonio Coleman #59 of the Buffalo Bills battles with Ryan Diem #71 of the Indianapolis Colts during game action August 19, 2010 at the Rogers Centre in Toronto, Ontario, Canada. (Photo by Brad White/Getty Images)

The Indianapolis Colts offensive line, from left to right, is made up of Charlie Johnson, Kyle DeVan, Jeff Saturday, Mike Pollak, and Ryan Diem.

Their pass blocking has been phenomenal and Peyton Manning can't blame them for his recent struggles as they've only allowed him to be sacked 13 times all year. That's the second best total in the league. 

The run blocking though has been awful, allowing only 3.5 yards per carry. That would be the worst in the league. 

Grade: B

Jacksonville Jaguars

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ARLINGTON, TX - OCTOBER 31:  Offensive guard Uche Nwaneri #77 of the Jacksonville Jaguars blocks against the Dallas Cowboys at Cowboys Stadium on October 31, 2010 in Arlington, Texas.  (Photo by Chris Chambers/Getty Images)
ARLINGTON, TX - OCTOBER 31: Offensive guard Uche Nwaneri #77 of the Jacksonville Jaguars blocks against the Dallas Cowboys at Cowboys Stadium on October 31, 2010 in Arlington, Texas. (Photo by Chris Chambers/Getty Images)

The Jacksonville Jaguars offensive line, from left to right, is made up of Eugene Monroe, Vince Manuwai, Brad Meester, Uche Nwaneri, and Jordan Black. 

They've been great at blocking for Maurice Jones-Drew as he's led the rushing attack to average 4.6 yards per carry. 

As for blocking for the quarterback, the Jaguars' 10th most sacks allowed come out at 29. 

Grade: B+

Kansas City Chiefs

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DENVER - NOVEMBER 14:  (L-R) Offensive linemen Barry Richardson #67, Ryan Lilja #65, Casey Wiegmann #62, Brian Waters #54 and Brandon Albert #76 of the Kansas City Chiefs head to the line of scrimmage to face the Denver Broncos defense at INVESCO Field at
DENVER - NOVEMBER 14: (L-R) Offensive linemen Barry Richardson #67, Ryan Lilja #65, Casey Wiegmann #62, Brian Waters #54 and Brandon Albert #76 of the Kansas City Chiefs head to the line of scrimmage to face the Denver Broncos defense at INVESCO Field at

The Kansas City Chiefs offensive line, from left to right, is made up of Branden Albert, Brian Waters, Casey Wiegmann, Ryan Lilja, and Ryan O'Callaghan

Those five men have made up arguably the best offensive line in the league.

They've allowed Jamaal Charles and company to rush for 4.9 yards per carry, the second best in the league. 

Additionally, the 17 sacks they've allowed are the third fewest.

Grade: A+

Miami Dolphins

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OAKLAND, CA - NOVEMBER 28:  Ricky Williams #34 of the Miami Dolphins celebrates with Jake Long #77 after Williams scored a touchdown during their game against the Oakland Raiders at Oakland-Alameda County Coliseum on November 28, 2010 in Oakland, Californ
OAKLAND, CA - NOVEMBER 28: Ricky Williams #34 of the Miami Dolphins celebrates with Jake Long #77 after Williams scored a touchdown during their game against the Oakland Raiders at Oakland-Alameda County Coliseum on November 28, 2010 in Oakland, Californ

The Miami Dolphins offensive line, from left to right, is made up of Jake Long, Richie Incognito, Joe Berger, John Jerry, and Vernon Carey. 

They haven't done a good job blocking for running backs, allowing them to run for just 3.8 yards per carry, the 26th best in the league. 

As for the pass, they've only allowed 23 sacks on the year, the 12th fewest of all NFL teams. 

Grade: B

Minnesota Vikings

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MINNEAPOLIS, MN - DECEMBER 05:  Phil Loadholt #71 of the Minnesota Vikings on the sideline against the Buffalo Bills at the Mall of America Field at the Hubert H. Humphrey Metrodome on December 5, 2010 in Minneapolis, Minnesota.  (Photo by Nick Laham/Gett
MINNEAPOLIS, MN - DECEMBER 05: Phil Loadholt #71 of the Minnesota Vikings on the sideline against the Buffalo Bills at the Mall of America Field at the Hubert H. Humphrey Metrodome on December 5, 2010 in Minneapolis, Minnesota. (Photo by Nick Laham/Gett

The Minnesota Vikings offensive line, from left to right, is made up of Bryant McKinnie, Chris DeGeare, John Sullivan, Ryan Cook, and Phil Loadholt.

Even though they've only allowed 23 sacks, the 13th fewest in the league, I bet Brett Favre wishes that the number was lower. 

Adrian Peterson probably doesn't have any complaints as the line has been the seventh best in the league, allowing 4.5 yards per carry.

Grade: A

New England Patriots

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EAST RUTHERFORD, NJ - SEPTEMBER 19:  Dan Koppen #67 of the New England Patriots in action against the New York Jets during their  game on September 19, 2010 at the New Meadowlands Stadium  in East Rutherford, New Jersey.  (Photo by Al Bello/Getty Images)
EAST RUTHERFORD, NJ - SEPTEMBER 19: Dan Koppen #67 of the New England Patriots in action against the New York Jets during their game on September 19, 2010 at the New Meadowlands Stadium in East Rutherford, New Jersey. (Photo by Al Bello/Getty Images)

The New England Patriots offensive line, from left to right, is made up of Matt Light, Logan Mankins, Dan Koppen, Quinn Ojinnaka, and Sebastian Vollmer. 

4.2 yards per carry, which is what the offensive line is allowing with their blocking, is 13th in the league. 

They've also done a wonderful job protecting Tom Brady. 

The 18 sacks they've allowed are the fifth fewest in the league, while the 38 quarterback hits are the absolute fewest. 

Grade: A+

New Orleans Saints

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NEW ORLEANS, LA - OCTOBER 31: Jahri Evans #73 of the New Orleans Saints in action during the game against the Pittsburgh Steelers at the Louisiana Superdome on October 31, 2010 in New Orleans, Louisiana. (Photo by Matthew Sharpe/Getty Images)
NEW ORLEANS, LA - OCTOBER 31: Jahri Evans #73 of the New Orleans Saints in action during the game against the Pittsburgh Steelers at the Louisiana Superdome on October 31, 2010 in New Orleans, Louisiana. (Photo by Matthew Sharpe/Getty Images)

The New Orleans Saints offensive line, from left to right, is made up of Jermon Bushrod, Carl Nicks, Jonathan Goodwin, Jahri Evans, and Jonathan Stinchcomb.

The 18 sacks they've allowed are the fifth fewest in the NFL, a fact which Drew Brees is pretty thankful about. 

As for the run blocking, the 4.1 yards per carry they've allowed with their blocking is 15th in the league. 

Grade: A-

New York Giants

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EAST RUTHERFORD, NJ - DECEMBER 27:  Chris Snee #76 of the New York Giants against the Carolina Panthers at Giants Stadium on December 27, 2009 in East Rutherford, New Jersey.  (Photo by Nick Laham/Getty Images)
EAST RUTHERFORD, NJ - DECEMBER 27: Chris Snee #76 of the New York Giants against the Carolina Panthers at Giants Stadium on December 27, 2009 in East Rutherford, New Jersey. (Photo by Nick Laham/Getty Images)

The New York Giants offensive line, from left to right, is made up of William Beatty, Kevin Boothe, Rich Seubert, Chris Snee, and Kareem McKenzie. 

This unit is another of the league's best, both in terms of pass blocking and run blocking.

Blocking for Ahmad Bradshaw and Brandon Jacobs, the line has let the running backs average 4.7 yards per carry, the fourth highest in the league. 

As for the pass blocking, the 12 sacks allowed are the best in the league. 

Grade: A+

New York Jets

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LANDOVER, MD - AUGUST 19:  Tackle D'Brickshaw Ferguson #60 of the New York Jets gets set for play during the NFL preseason game against the Washington Redskins August 19, 2006 at FedEx Field in Landover, Maryland.  (Photo by Greg Fiume/Getty Images)
LANDOVER, MD - AUGUST 19: Tackle D'Brickshaw Ferguson #60 of the New York Jets gets set for play during the NFL preseason game against the Washington Redskins August 19, 2006 at FedEx Field in Landover, Maryland. (Photo by Greg Fiume/Getty Images)

The New York Jets offensive line, from left to right, is made up of D'Brickashaw Ferguson, Matt Slauson, Nick Mangold, Brandon Moore, and Damien Woody.

Pass blocking has been excellent, allowing only 20 sacks so far this year. That makes them the seventh best unit in that category.

As for the run blocking, that has been quite good as well. The Jets have run for the seventh best yards per carry, 4.5. 

Grade: A+

Oakland Raiders

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OAKLAND, CA - NOVEMBER 4: Cooper Carlisle #66 of the Oakland Raiders looks on against the Houston Texans at McAfee Coliseum November 4, 2007 in Oakland, California. (Photo by Jed Jacobsohn/Getty Images)
OAKLAND, CA - NOVEMBER 4: Cooper Carlisle #66 of the Oakland Raiders looks on against the Houston Texans at McAfee Coliseum November 4, 2007 in Oakland, California. (Photo by Jed Jacobsohn/Getty Images)

The Oakland Raiders offensive line, from left to right, is made up of Jared Veldheer, Robert Gallery, Samson Satele, Cooper Carlisle, and Langston Walker. 

While good at blocking for the running game, they haven't been so good at preventing sacks. 

The five big men have allowed 34 sacks, the fifth most in the NFL. 

As for the run, the 4.7 yards per carry they've helped their backs average ranks fourth in the league. 

Grade: B+

Philadelphia Eagles

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BETHLEHEM, PA - JULY 25:  Winston Justice #74 of the Philadelphia Eagles looks on during training camp on the practice field at Lehigh University on July 25, 2006 in Bethlehem, Pennsylvania.  (Photo by Jim McIsaac/Getty Images)
BETHLEHEM, PA - JULY 25: Winston Justice #74 of the Philadelphia Eagles looks on during training camp on the practice field at Lehigh University on July 25, 2006 in Bethlehem, Pennsylvania. (Photo by Jim McIsaac/Getty Images)

The Philadelphia Eagles offensive line, from left to right, is made up of Jason Peters, Todd Herremans, Mike McGlynn, Nick Cole, and Winston Justice. 

They rank first in yards per carry, allowing their running backs (and Michael Vick) to rush for 5.2 yards per carry. 

But as for the pass protection, the 33 sacks they've allowed are the sixth most. 

Grade: B+

Pittsburgh Steelers

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BALTIMORE - NOVEMBER 29:  Trai Essex #79 of the Pittsburgh Steelers pauses during a time out during the game against the  Baltimore Ravens at M&T Bank Stadium on November 29, 2009 in Baltimore, Maryland. The Ravens defeated the Steelers 20-17. (Photo by L
BALTIMORE - NOVEMBER 29: Trai Essex #79 of the Pittsburgh Steelers pauses during a time out during the game against the Baltimore Ravens at M&T Bank Stadium on November 29, 2009 in Baltimore, Maryland. The Ravens defeated the Steelers 20-17. (Photo by L

The Pittsburgh Steelers offensive line, from left to right, is made up of Chris Scott, Chris Kemoeatu, Maurkice Pouncey, Trai Essex, and Flozell Adams.

Thanks in part to the immobility of their quarterback, they've allowed 31 sacks this season, the eighth most in the league. 

The 4.0 yards per carry that the running backs they've blocked for have averaged ranks just 22nd in the league. 

Overall, the line hasn't been very good. 

Grade: C

San Diego Chargers

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SAN DIEGO, CA - JANUARY 3:  Kris Dielman #68, Dennis Norman #64, and Nick Hardwick #61 of the San Diego Chargers enter the field against the Washington Redskins during the Washington Redskins  v San Diego Chargers NFL Game on January 3, 2010 at Quolcomm S
SAN DIEGO, CA - JANUARY 3: Kris Dielman #68, Dennis Norman #64, and Nick Hardwick #61 of the San Diego Chargers enter the field against the Washington Redskins during the Washington Redskins v San Diego Chargers NFL Game on January 3, 2010 at Quolcomm S

The San Diego Chargers offensive line, from left to right, is made up of Marcus McNeill, Kris Dielman, Nick Hardwick, Louis Vazquez, and Jeromey Clary. 

Overall, the Chargers line has been rather mediocre. 

The 4.0 yards per carry their running backs average ties them for 17th in the league. 

As for the pass blocking, they've allowed 29 sacks, the 11th most in the NFL. 

Grade: C+

San Francisco 49ers

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SAN FRANCISCO - NOVEMBER 14:  Mike Iupati #77 of the San Francisco 49ers in action against the St. Louis Rams at Candlestick Park on November 14, 2010 in San Francisco, California.  (Photo by Ezra Shaw/Getty Images)
SAN FRANCISCO - NOVEMBER 14: Mike Iupati #77 of the San Francisco 49ers in action against the St. Louis Rams at Candlestick Park on November 14, 2010 in San Francisco, California. (Photo by Ezra Shaw/Getty Images)

The San Francisco 49ers offensive line, from left to right, is made up of Barry Sims, Mike Iupati, David Baas, Chilo Rachal, and Anthony Davis. 

Those five have allowed 30 sacks this year, the ninth most in the league. 

The 4.2 yards per carry they've helped their backs gain is the 13th best though, so that at least helps make up for the bad pass blocking.

Grade: B

Seattle Seahawks

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SEATTLE - AUGUST 14:  Tackle Russell Okung #76 of the Seattle Seahawks pass blocks during the preseason game against the Tennessee Titans at Qwest Field on August 14, 2010 in Seattle, Washington. (Photo by Otto Greule Jr/Getty Images)
SEATTLE - AUGUST 14: Tackle Russell Okung #76 of the Seattle Seahawks pass blocks during the preseason game against the Tennessee Titans at Qwest Field on August 14, 2010 in Seattle, Washington. (Photo by Otto Greule Jr/Getty Images)

The Seattle Seahawks offensive line, from left to right, is made up of Russell Okung, Ben Hamilton, Chris Spencer, Stacy Andrews, and Sean Locklear.

Poor play from this unit has been one of the reasons for the lack of success in Seattle this year.

They've allowed 29 sacks, the 10th most in the league. 

As for the run blocking, the horrific 3.5 yards per carry is the second lowest in the league. 

Grade: C-

St. Louis Rams

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ST. LOUIS - NOVEMBER 21: Rodger Saffold #76 of the St. Louis Rams is introduced prior to playing against the Atlanta Falcons at the Edward Jones Dome on November 21, 2010 in St. Louis, Missouri.  The Falcons beat the Rams 34-17.  (Photo by Dilip Vishwanat
ST. LOUIS - NOVEMBER 21: Rodger Saffold #76 of the St. Louis Rams is introduced prior to playing against the Atlanta Falcons at the Edward Jones Dome on November 21, 2010 in St. Louis, Missouri. The Falcons beat the Rams 34-17. (Photo by Dilip Vishwanat

The St. Louis Rams offensive line, from left to right, is made up of Rodger Saffold, Jacob Bell, Jason Brown, Adam Goldberg, and Jason Smith.

Even though the Rams are in playoff contention, the offensive line has not been so great. 

The 24 sacks allowed are the 14th fewest in the league while the 3.7 yards per carry is the fourth worst such number. 

Grade: C+

Tampa Bay Buccaneers

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TAMPA, FL - SEPTEMBER 13:  Offensive lineman Jeremy Zuttah #76 of the Tampa Bay Buccaneers blocks against the Dallas Cowboys during the game at Raymond James Stadium on September 13, 2009 in Tampa, Florida.  (Photo by J. Meric/Getty Images)
TAMPA, FL - SEPTEMBER 13: Offensive lineman Jeremy Zuttah #76 of the Tampa Bay Buccaneers blocks against the Dallas Cowboys during the game at Raymond James Stadium on September 13, 2009 in Tampa, Florida. (Photo by J. Meric/Getty Images)

The Tampa Bay Buccaneers offensive line, from left to right, is made up of Donald Penn, Ted Larsen, Jeremy Zuttah, Derek Hardman, and James Lee. 

21 sacks is all that the line has allowed, good enough for the ninth fewest total in the league. 

As for the run blocking, it's just as good. The 4.4 yards per carry ranks ninth in the league as well.

Grade: A-

Tennessee Titans

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NASHVILLE, TN - SEPTEMBER 20:  Michael Roos #71 of the Tennessee Titans is pictured during the NFL game against the Houston Texans at LP Field on September 20, 2009 in Nashville, Tennessee.  (Photo by Andy Lyons/Getty Images)
NASHVILLE, TN - SEPTEMBER 20: Michael Roos #71 of the Tennessee Titans is pictured during the NFL game against the Houston Texans at LP Field on September 20, 2009 in Nashville, Tennessee. (Photo by Andy Lyons/Getty Images)

The Tennessee Titans offensive line, from left to right, is made up of Michael Roos, Leroy Harris, Eugene Amano, Jake Scott, and David Stewart. 

As you would expect with Chris Johnson, who makes lines look better, in the backfield, the yards per carry of 4.3 is 11th in the league. 

The pass block has been just as good. They've allowed 20 sacks on the year, the seventh fewest in the league. 

Grade: A

Washington Redskins

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CHICAGO - OCTOBER 24: Donovan McNabb #5 of the Washington Redskins takes the snap against the Chicago Bears as teammates Kory Lichtensteiger #78 and Trent Williams #71 prepare to block at Soldier Field on October 24, 2010 in Chicago, Illinois. The Redskin
CHICAGO - OCTOBER 24: Donovan McNabb #5 of the Washington Redskins takes the snap against the Chicago Bears as teammates Kory Lichtensteiger #78 and Trent Williams #71 prepare to block at Soldier Field on October 24, 2010 in Chicago, Illinois. The Redskin

The Washington Redskins offensive line, from left to right, is made up of Trent Williams, Kory Lichtensteiger, Casey Rabach, Artis Hicks, and Jammal Brown. 

Thanks to the offensive line, the Redskins running backs are averaging a mediocre 4.1 yards per carry, the 16th best average in the league. 

A bigger problem is the fact that the line has allowed 36 sacks, the third most in the country. 

Grade: C

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