The Cowboys placed C Phil Costa on injured reserve with an ankle injury. He started three games for the Cowboys in 2012.
Costa started all 16 games last season. Replacing Costa's spot on the roster will be OT Darrion Weems, who was signed off the Broncos' practice squad.
The way we see it
Costa is not a top-shelf starting center, but he at least held down the position marginally well when he played. But he was seldom healthy, and it caused an unsettled situation on the line from the start of the season. Ryan Cook and Mackenzy Bernadeau have struggled in his place.