The Seahawks had two players leave Sunday's game against the 49ers with injuries, and as of Monday, there was not yet definitive news on either safety Bradley McDougald or guard Jordan Simmons.
McDougald, who has been dealing with a patellar tendon issue for much of the season, had the injury flare up on him in the first half of Sunday's 26-23 overtime loss, and was unable to return to the game. His status for Seattle's Week 16 game against Kansas City likely won't be known until late in the week or perhaps on gameday.
"He's pretty sore," Carroll said. "It's going to be all the way until the end of the week."
Carroll did not have a timeline on Simmons' injury, but did not sound optimistic about the offensive lineman who has started the past two games in place of an injured D.J. Fluker.
"We'll let you know in a couple days here what's going on more so when we know, but he has a knee injury," Carroll said. "He has a pretty good knee injury. It's going to be an issue."
As for Fluker, who has been out with a hamstring injury sustained in Seattle's Week 13 win over San Francisco, Carroll said there's at least a chance he could return this week: "We're going to know in the next few days. I can't tell you right now. We're hoping he might have a chance."
Linebacker K.J. Wright, who has missed the past five games with a knee injury, and 11 overall this season, returned to practice last week and has a chance to play this week if things go well in practice.
"K.J. is going to practice this week, and we'll see how he does," Carroll said. "The ramping up has worked out fine, he's ready to go. We're thinking if the week goes well, he's got a chance to play, which he's really excited about. We'll see what happens. But we really won't know until we go, then the next day and the next day, but we'll keep our fingers crossed for him."
Carroll added that Wright's knee responded well to last week's workload, saying, "It's all positive right now."
The status of rookie running back Rashaad Penny, who missed Sunday's game with a knee injury, also remains unclear early in the week.
"We've got to wait a couple of days here," Carroll said. "We'll see by Wednesday. He's working hard to try to get back, but it's not certain yet if he's going to be able to turn it around or not."
Game action photos from the Seahawks' 26-23 loss to the San Francisco 49ers in Week 15 of the 2018 NFL season.