- Calvin Watkins, ESPN.com
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IRVING, Texas -- Cowboys backup guard Derrick Dockery received some first-team snaps at right guard Friday.
Dockery was signed during training camp after the Cowboys endured several injuries to the interior of the offensive line.
"Yes, I'm getting a little bit," Dockery said of his practice time with the first team. "I don't know what it means. They're just preparing me for any opportunity that may happen in the game."
Dockery started two games in 2011 and has played four offensive snaps this season. He started at left guard for an injured Bill Nagy in Week 2 and earned the start over an injured Montrae Holland in last season's final game.
Cowboys owner/general manager Jerry Jones said this week that he likes Dockery's size (6-foot-6, 325 pounds) and that it has helped Dockery stay on the active roster.
If Bernadeau struggles this week, a lineup change could occur.
The Cowboys have benched offensive linemen in the past. Guard Leonard Davis was benched for poor play during a game and replaced by Holland. Davis later returned to that game when Holland suffered an eye injury.
IRVING, Texas -- Cowboys backup guard Derrick Dockery received some first-team snaps at right guard Friday.Despite struggling this season, Mackenzy Bernadeau is the starter and is expected to remain there for the Baltimore Ravens game on Sunday.