ST. LOUIS, MO - DECEMBER 21: Alex Barron #70 of the St. Louis Rams walks onto the field before the game against the San Francisco 49ers at the Edward Jones Dome on December 21, 2008 in St. Louis, Missouri. The 49ers won 17-16. (Photo by Dilip Vishwanat/Getty Images)
The Bobby Carpenter era in Dallas is officially over.
Carpenter was the Cowboys' first round pick in 2006 (18th overall) out of Ohio State.
Though he found some moderate success last season in the nickel role, Carpenter never seemed comfortable in the 3-4 system. The second round selection of Sean Lee, a smart inside linebacker with good coverage ability, all but provided the death knell for Carpenter's time in Dallas.
Like Carpenter, Barron is a former first rounder who is yet to live up to expectations.
A first round pick in 2005, Barron has started 74 of 76 games since joining the Rams. However, his time in St. Louis will be marked by disappointment, as he failed to develop into the stalwart tackle St. Louis thought they were getting on draft day five years ago. He seems a fitting successor to Flozell Adams, though not in a good way; Barron led the league with five holding penalties last season.
Barron will present some competition for Doug Free at left tackle and, failing that, could take over as the team's swing tackle (a back-up capable of playing both tackle positions).