The Cowboys are not expected to retain free agent OG Derrick Dockery for 2013. ESPN Dallas expects the team to rely on "younger linemen" going forward. Dockery was signed in 2012 training camp as an injury replacement and appeared in 15 games, making two spot starts. At 32, he is nearing the end of the line.

Cowboys LG Derrick Dockery (knee) will miss at least another three weeks, a source tells ESPN Dallas. Dockery has an MCL sprain in addition to a tibial plateau fracture. Backup Bill Nagy is going to need plenty of help against Ndamukong Suh on Sunday.

Cowboys LG Derrick Dockery is unlikely to play this week after sustaining an MCL sprain in his knee. Rookie Bill Nagy, who had been banged up going into Week 2, will likely start against the Redskins Monday night. The rookie was a liability against the Jets in the season opener.

Derrick Dockery got first-team reps at left guard ahead of Bill Nagy Wednesday. Nagy struggled against the Jets last Sunday night, getting pushed back into the backfield repeatedly. It shouldn't be a surprise as Nagy is a seventh-round rookie. If the veteran Dockery can get up to speed by the end of this week, he's a decent bet to start and help the Cowboys' run game.

Cowboys signed OG Derrick Dockery.

The Ravens worked out free agent OG Derrick Dockery on Saturday. Free agent G/T Jason Murphy, a fringe player, was also at the workout. Dockery is still just 29 years old, but received no interest in free agency after his March release from the Redskins. He was a power-blocking guard in his prime, which suits the Ravens' mentality. Dockery could be an option at right guard in Baltimore if Marshal Yanda kicks back to right tackle.