The Cowboys have decided to place veteran guard Nate Livings on injured reserve with a knee injury that required arthroscopic surgery last month.
Livings' roster spot was immediately filled by former Chiefs linebacker Edgar Jones, a six-year veteran who should provide depth on special teams.
Jones played just one year in Kansas City after five seasons in Baltimore. He played all 16 games for the Chiefs last year but has just 57 total games played since 2007.
The Cowboys initially kept just five linebackers when they trimmed the roster to 53 late Saturday afternoon. The club decided to waive Caleb McSurdy, Brandon Magee and Cam Lawrence on the final cuts.
Jones will join a linebacker group consisting of Sean Lee, Bruce Carter, Justin Durant, Ernie Sims and rookie DeVonte Holloman.
Although Livings' base salary of $2.4 million is guaranteed for this season, the Cowboys were preparing for 2013 without the veteran who joined the Cowboys last year in free agency.
Heading into the Sept. 8 game with the Giants, the Cowboys will likely go with Mackenzy Bernadeau and David Arkin as the starting guard, unless Ron Leary can return from a knee scope in time. Leary did some light running before Thursday's preseason finale with the Texans.