The Seahawks lost to the Steelers on Sunday, and also came out of the game with a few new injury concerns.

Running back Kenneth Walker III, who came into the game listed as questionable with a shoulder injury, left the game due to that injury in the second half, though he was able to return at one point. Right tackle Abraham Lucas, who was on injured reserve earlier in the season with a knee injury, missed the second half after aggravating that same knee, and center Evan Brown left in the third quarter with a concussion.

"Kenny couldn't play, he got his shoulder banged again," Seahawks coach Pete Carroll said. "Abe banged his knee again too, and Evan got hit in the head and needed a break. So we've got a couple of guys we'll have to figure out what's going on with them next week."

Asked about Lucas' injury, Carroll said, "It sounded like he kind of wrenched it a little bit. I don't think he reinjured it as much as he just didn't have enough power to come back."

The Seahawks played the game without linebacker Jordyn Brooks, who aggravated an existing ankle injury in last week's win over the Titans. 

"Jordyn's ankle has just continued to bother him, and he banged it pretty good last week and didn't feel like he could get all the way back, and we thought it would give us a chance to give him an opportunity—if he played on it this week he would be really hobbling next week, so we thought this was the best choice to try to give him an opportunity to get back and get right," Carroll said. 

Carroll also gave more details on the decision to place safety Jamal Adams on injured reserve Saturday. 

"To me it's a heartbreaker," Carroll said. "He did everything he could, he tried so hard to get right to get back, and he just couldn't make it all the way back. There wasn't enough time. He's going to need the time in the offseason to get a couple more months behind him. The weeks that we took—we tried a couple of different times to experiment with some breaks to see if that would help him, but it really didn't. And we came to the conclusion together that he couldn't get right, he couldn't get full speed, couldn't get where he could put his foot in the ground, unfortunately. I admire the heck out of him, he did everything he could, he busted his tail throughout the whole time with the right attitude and all, and it was really hard to get to the point where you go, 'Yeah, I'm not able to get back.'"