An unspectacular, but solid starting left guard, Justin Blalock doesn't have any weaknesses in his game.
Brian Waters, G, Chiefs. Age: 34.
And so ends the Brian Waters era in Kansas City. Waters has been with the Chiefs since 2000, and at 34 years old, he can still play very well. I'm pretty shocked the Chiefs let him go.
Richie Incognito was Miami's best interior lineman this year. He has definitely turned his career around; he was once criticized for sitting out a 2008 game for a fake illness. Jim Haslett was so frustrated that he actually slapped a candy bar out of Incognito's hands on the sideline.
Jacob Bell, G, Rams. Age: 30. Re-signed with Rams
Jacob Bell never lived up to his $36 million contract, but he's still a solid starting guard who is a pretty good pass protector.
Leonard Davis, G, Cowboys. Age: 32.
Leonard Davis played well last year, but he was due $6 million and thus became a fiscal casualty for the cap-strapped Cowboys. He turns 33 in early September, but could be a solid starter for a couple more seasons.
Kyle Kosier, G, Cowboys. Age: 32. Re-signed with Cowboys (3 years, $9 million)
Kyle Kosier will turn 33 in November, but he did a very good job at left guard for the Cowboys this season after coming back from an early-season Achilles injury.
Chris Chester, G, Ravens. Age: 28. Signed with Redskins (5 years, $20 million)
Chris Chester didn't enjoy a good postseason, but otherwise had a pretty decent 2010 campaign.
Davin Joseph, G, Buccaneers. Age: 27. Re-signed with Buccaneers (7 years, $53 million)
A quality run-blocking guard, Davin Joseph had his season cut short because of a fractured foot.
Kyle DeVan (ERFA), G, Colts. Age: 26. Re-signed with Colts
Kyle DeVan did a very good job in pass protection down the stretch, surrendering only one sack all year. However, he was heavily penalized.
Derrick Dockery, G, Redskins. Age: 30.
Derrick Dockery had a very solid 2009 campaign, but barely played last year because he didn't fit Mike Shanahan's zone-blocking scheme.
Robert Gallery, G, Raiders. Age: 31. Signed with Seahawks (3 years)
Robert Gallery is a talented guard, but can't stay healthy. He has missed 14 games in the past two seasons.
Mike Brisiel, G, Texans. Age: 28. Re-signed with Texans
Mike Brisiel played pretty well for the Texans at right guard in 2010. The problem is that he has always been injury-prone throughout his career.
David Baas, G/C, 49ers. Age: 29. Signed with Giants
David Baas should have been the team's left guard this year. However, he was forced into playing center in the wake of Eric Heitmann's season-long injury. This versatility can only help him in the open market.
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Evan Mathis, G, Bengals. Age: 29. Signed with Eagles
Evan Mathis is a talented guard, but can't stay healthy. Cedric Benson really missed him this season.
Rich Seubert, G/C, Giants. Age: 32.
Rich Seubert is a skilled, versatile interior offensive lineman. The problem is that he's a 32-year-old coming off major knee surgery and may not be ready until the middle of the 2011 season.
Mike Pollak, G, Colts. Age: 26.
A marginal guard who struggles in the run-blocking department.
Daryn Colledge, G, Packers. Age: 29. Signed with Cardinals
Daryn Colledge can be upgraded, but the Packers could do worse at left guard.
Pork Chop Womack, G, Browns. Age: 32. Signed with Cardinals
Pork Chop Womack has done an OK job at right guard for the Browns the past couple of years, but he can be upgraded.
Deuce Lutui, G, Cardinals. Age: 28. Re-signed with Cardinals
Derek Anderson's laughing partner, Deuce Lutui and his drunken quarterback were probably making fun of their own ineptness this year. Lutui was much better in 2009, but it looks like he's going to suck again. He signed with the Bengals, but failed his physical.
Max Jean-Gilles, G, Eagles. Age: 27. -- Signed with Bengals (1 year, $1.15 million)