Wide receiver Larry Fitzgerald tries to escape a facemask against the Lions last weekend. Fitzgerald did, but later suffered a knee injury that could keep him out of the Seattle game.

Larry Fitzgerald feigned surprise.

"No questions about Seattle?" the wide receiver said a few minutes into his media session Thursday, knowing full well that answers about Fitzgerald's sprained left knee were going to dominate his weekly chat. In some ways, it made it all about Seattle – at least from the perspective about whether Fitzgerald was going to be able to play there.

There were no concrete answers. The injury report was due out later Thursday, but Fitzgerald was not practicing during the open portion of the workout. Fitzgerald said he did "a little more" than Wednesday.

"I'll do everything I can to be out there," Fitzgerald said.

If Fitzgerald can't play, Jaron Brown will be the guy who is plugged in alongside Michael Floyd and John Brown. The Cardinals also have

Ted Ginn, who has logged few snaps of late as a wide receiver. The Cardinals want Fitzgerald to play, but know they have the depth if he cannot.

"We've got receivers, that's not a problem," offensive coordinator Harold Goodwin said. "Whoever is open gets the ball. We're loaded at receiver. I'm not worried at all."

Jaron Brown has gotten limited chances but has looked good with nine receptions for 76 yards and a touchdown – and he would have doubled his yardage with two more scores had quarterbacks Drew Stanton and Carson Palmer not each missed him on deep throws on which he was open.

"We're obviously practicing for worst-case scenario," Brown said. "You just have to be ready.

"I kind of know all the positions. When a guy needs a breather, I'm the guy who goes in. I'm trying to learn (Larry's) position, get it down pat."

Fitzgerald doesn't want to miss the game given its implications in the NFC West and NFC races. He also has played 110 consecutive regular-season games, last sitting out Dec. 2, 2007. Not that the streak is forefront in his mind.

"I just take care of myself and try and be ready to go every week," said Fitzgerald, who has a team-leading 46 catches for a team-best 658 yards this season. "It's a rough game, a rough business. You see every week someone is getting dinged up, banged around. It's not like I haven't played through a lot of different things."

The Cardinals will wait to see if he can do it again.

"We've got four days until we play," Fitzgerald said, "so I remain optimistic."

PETERSON, SHERMAN DOWNPLAY REUNION

The offseason was peppered with long-distance, Twitter- and contract-fueled comments between Cardinals cornerback Patrick Peterson and Seahawks cornerback Richard Sherman in the debate of who was better. Now that the teams are meeting for the first time this

season, both players deftly side-stepped such talk with actual football about to be played.

"We used to text here and there," Peterson said. "At the same time, this game has nothing to do with me and Richard. It's all about Seattle and the Cardinals going out there, trying to put their team in the best position possible to win the ballgame and for playoff implications."

Peterson has two interceptions on the season and has played excellent football the past three games. Sherman, who has one interception, continues to do well although the Seahawks' defense is not as dominant this season as it was last year.

"We won't ever see each other on the same field, so it's not something I worry about," Sherman said. "I'll leave that to our receivers – we're going against a great set of receivers in Fitz and Floyd, now (John) Brown is having a great year. So that's where you get your competition, that's where you know that you're going to get a challenge, and it's always exciting going against great guys."    

ACHO ADDED TO INJURY REPORT, STINSON SITS

Linebacker Sam Acho (neck) was added to the injury report Thursday because of a neck issue. No word yet on its seriousness. Defensive tackle Ed Stinson (toe), like Fitzgerald, did not practice. The other Cardinals limited Wednesday were limited again Thursday: linebacker Lorenzo Alexander (knee), safety Rashad Johnson (back), running back Andre Ellington (hip/foot) and running back Robert Hughes (hamstring).

For the Seahawks, running back Marshawn Lynch (back) missed practice for a second straight day, as did center Max Unger (kne/ankle), cornerback Marcus Burley (hamstring) and linebacker Kevin Pierre-Louis (shoulder). Limited were defensive end Demarcus Dobbs (knee) and linebacker Brock Coyle (glute).