Abraham Lucas is back, having been activated from injured reserve ahead of the Seahawks' Thursday night game against the Cowboys.

Guard Phil Haynes was placed on injured reserve to make room on the 53-man roster. Additionally, receiver Cody Thompson was elevated from the practice squad.

Lucas, who went on injured reserve after leaving the season opener with a knee injury, returned to practice two weeks ago, and Seahawks coach Pete Carroll had said heading into this week that the hope was to get him back for Thursday's game. And Lucas showed enough this week to make that happen, with Carroll noting the second-year tackle, "practiced really well."

"He's back to where we're counting on him to be able to help and contribute," Carroll said Tuesday before the team left for Dallas. "… Abe had a good week. Everything's kind of on schedule as we planned it out quite some time ago aiming for this week. He did his part."

Haynes, who did not practice this week due to a toe injury, was ruled out for this week's game on Wednesday's injury report. He now will have to miss at least four games before being eligible to return.

Thompson, who has split time this season between the 53-man roster and practice squad, has appeared in six games, primarily playing on special teams.