The Tampa Bay Buccaneers improved their offensive line by acquiring center Evan Dietrich-Smith, the organization announced.

Regarded as one of the top available centers in free agency, Dietrich-Smith signed a four-year contract worth $14.25 million. $7.25 million of the deal is guaranteed.

Dietrich-Smith went undrafted in 2009 but later became a starter in Green Bay.

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Aaron Wilson covers the Ravens for The Baltimore Sun.