The Cowboys made some changes to their roster ahead of Sunday's game against the Ravens in Brazil.
Safety P.J. Locke has been placed on injured reserve. He was ruled out for this week with a foot injury and will miss at least three more games.
Locke started one of the team's first two games and had three tackles over the last two weeks.
The Cowboys signed linebacker Justin Barron off of the practice squad to fill the opening on the 53-man roster. He was elevated to play on special teams in Week 1.
The Cowboys also elevated defensive back Reddy Stewart from the practice squad for Sunday's game.