The Buffalo Bills announced that they reached a contract extension with center Eric Wood on Friday.

Terms of the deal were no immediately disclosed.

A first-round pick by the Bills in 2008, Wood, a 6-4, 310-pound center, has started all 47 games that he's appeared in. Drafted 28th overall out of Louisville in that 2008 draft, Wood anchored a rushing attack that averaged 138.6 yards per game a season ago.

The Bills' offensive line only gave up 30 sacks in 2012, which was the fifth fewest allowed in the AFC. 

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Aaron Wilson covers the Ravens for The Baltimore Sun.