With free agency set to begin in less than two weeks, Redskins.com's Stephen Czarda previews the 2015 NFL free agent class. Today's focus is on the centers.

For the first time in his seven-year career, Kory Lichtensteiger played center for an entire season after finding himself at guard the previous six years.

The Bowling Green product, who joined the Redskins in 2010, started all 16 regular-season games at center in 2014.

It was the third straight year in which he was a full-time starter through the season.

While Lichtensteiger has remained durable, the Redskins could add to their offensive line this offseason with another quality center.

Behind Lichentensteiger for most of the season on the team's unofficial depth chart was starting guard Chris Chester. Had Chester needed to fill in for Lichensteiger, it would have had an impact on who played guard beside him.

If the Redskins are in a search for a proven center in free agency to add depth to the position, here are the players scheduled to become free agents March 10:

• Joe Berger, Minnesota Vikings
• Brian De La Puente, Chicago Bears
• Jonathan Goodwin, New Orleans Saints
• Rodney Hudson, Kansas City Chiefs
• Doug Legursky, San Diego Chargers
• Dominic Raiola, Detroit Lions
• Samson Satele, Miami Dolphins
• Stefen Wisniewski, Oakland Raiders

Raiola, a veteran of 14 NFL seasons, has played his entire career with the Lions. He helped former first-overall pick Matthew Stafford transition to the NFL as he provided him every snap from under center until Week 17 of the 2014 regular season.

Satele, a Hawaii product, played for the Dolphins last season after two years with the Colts. During his eight seasons in the NFL, Satele has started at least 11 games each season.

Wisniewski, meanwhile, has started all 61 games he's appeared in over the last four seasons with the Raiders.

RELATED LINKS:
-- 2015 Free Agency Outlook: Tackles
-- 2015 Free Agency Outlook: Tight Ends 

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