RENTON — Seattle’s first-round pick could see his first action this week, wide receiver Tyler Lockett is dealing with a back injury, guard Mike Iupati will return to the starting lineup once he’s healthy, and tight end Will Dissly is fine.

That, and more, are part of what we learned about the Seahawks on Wednesday:

Lockett sits, David Moore practices

Lockett was one of six players to sit out practice Wednesday. Only two were a surprise: Lockett and safety Tedric Thompson, out with a hamstring issue. Lockett sat out with what was listed as a back injury.

The injury was not known about when coach Pete Carroll met the media before practice, so it’s unclear if it’s merely precautionary or something that could impact Lockett into Sunday’s game.

Lockett was held to just one catch in Sunday’s 21-20 win over the Bengals after leading Seattle with 57 last season, but it was a big one: a 44-yard TD on the first play of the fourth quarter that gave the Seahawks their winning points.

Interestingly, while Lockett was out Wednesday, receiver David Moore practiced on a limited basis roughly three weeks after he suffered a broken humerus. Carroll has not set any specific timetable for Moore, who missed the final two preseason games and the regular-season opener. But it hardly needs stating how much the Seahawks could use Moore if Lockett is out or limited.

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L.J. Collier may be able to play Sunday

Collier, the team’s first-round pick, suffered a high ankle sprain the first week of training camp and did little until practicing on a limited basis last week.

Carroll said Collier, a defensive end out of TCU, will practice fully this week and has “a chance to maybe even play this week.’’

Collier didn’t play in the preseason, so he will undoubtedly be eased in to things when he does play. The Seahawks also have a pretty good defensive-end rotation going with Jadeveon Clowney’s addition, Ziggy Ansah’s return coming soon, veterans Quinton Jefferson and Branden Jackson improving and second-year player Rasheem Green’s emergence.

“The whole group is kind of elevating,’’ Carroll said.

That means the Seahawks might be able to continue to be patient with Collier, especially if Ansah comes back this week. Carroll said only that Ansah will practice this week and the team will take it day by day with him. Ansah was officially listed as a limited participant Wednesday.

Carroll made an interesting admission about Collier, though, saying that he was in better shape when he returned for training camp than he had been when he was with the team in the spring for the offseason program.

“He had really had a good offseason the last six weeks he really benefited from,” Carroll said. “He was stronger and quicker and lighter, and every aspect of his movement showed a little bit differently. So he was off to a great start.’’

(Bob Condotta / The Seattle Times)

Justin Britt should play despite sore knee

Center Justin Britt had some notable struggles in Sunday’s game, and Carroll said it didn’t help that Britt banged his knee on the second offensive play of the game. Britt came out for one play and then returned, but Carroll said he wasn’t 100%.

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“It was great that he stayed out there and played the game for us,’’ Carroll said. “He’s a little gimpy today, but he’ll do some stuff today. But he got whacked pretty good.’’

Britt did not practice on Wednesday, one of the six who sat out.

But Carroll said he anticipates Britt being able to play Sunday against the Steelers. Asked if there was any danger that Britt might not play, Carroll said, “No, not in my mind. I am kind of optimistic, though.”

When Mike Iupati is ready, left-guard job is his

Iupati stepped in for one play at left guard when Britt was injured Sunday so that Ethan Pocic could play at center.

That one play might have been even more than the Seahawks wanted him to play as Iupati missed the preseason with foot and calf injuries before getting in some practice last week.

But Carroll expects Iupati to return to practice fully this week and, assuming he makes it through the week, then he will start at left guard, Carroll said.

“It’s Mike’s job,’’ Carroll said of the left-guard position. “We feel Mike has earned that, so he will jump back in. … Really anxious to get Mike in there. He’s dying to play. So we are looking forward to that.’’

Recapping a few other injury issues

  • It sounds as if cornerback Neiko Thorpe, a special-teams captain, won’t play because of a hamstring injury. Carroll said “that’s pretty hard to get back in the position that he plays, the way he plays.’’ Thorpe did not practice Wednesday.
  • Carroll said cornerback Ugo Amadi (shoulder) would practice Wednesday and wants to play but said he’ll have to make it through the week before being cleared. “He’s going to be limited, but he will be out there today,’’ Carroll said. Amadi was limited Wednesday.
  • DT Poona Ford did not practice with a calf injury, but Carroll said, “We’ll just go one day at a time with him and see how it goes.’’ Carroll called the injury a calf strain.
  • TE Will Dissly also got his knee hit during the game but Carroll said “he should be OK’’ and that he is expected to practice this week. Dissly was listed as a full participant.
  • OL Joey Hunt, out the first week with a high ankle sprain, was scheduled to run on Wednesday. But it’s unclear when he can return.
  • DE Jadeveon Clowney was again listed as limited solely because the team is limiting his snaps as he works his way back into football shape after sitting out the offseason program and training camp while with Houston. Clowney played 48 of 77 snaps against the Bengals.

C.J. Prosise ready to go

One of the more notable omissions in Sunday’s game was running back C.J. Prosise, who played some on special teams but did not get an offensive snap.

Seattle instead used only Chris Carson and Rashaad Penny at tailback.

That Prosise played on special teams showed he was healthy enough to go and Carroll said Wednesday the team talked about using him on a late series. While Prosise was never on the injury report last week, Carroll said the team did not know until late in the week if he would be active for the game (maybe just due to roster construction) and “so he wasn’t as involved in the (game) plan.’’

Otherwise, he said there was no reason Prosise didn’t get in the game other than that the Seahawks also didn’t have a ton of offensive plays — officially 49 actual plays.

“I would have loved to have gotten him in,’’ Carroll said. “We talked about it in the fourth quarter to see if he could finish it off. … But I thought the other guys were running hard and feeling good and we hadn’t overworked them, for sure.’’