James Laurinaitis and the St. Louis Rams have agreed to a five-year contract extension worth $41.5 million. The deal, that runs through the 2017 season, has $23.5 million in guarantees, according to a source.

Laurinaitis was a second round pick in 2009 out of Ohio State.

Jeff Fisher has referred to Laurinaitis as a "captain of the defense."