PITTSBURGH—One defensive end will make his Seahawks debut when the Seahawks play the Steelers on Sunday, while another will be out a second straight week.

L.J. Collier, Seattle's first-round pick this year, is active after being held out of last week's win over Cincinnati, but free-agent addition Ziggy Ansah is inactive for the second week in a row.

Collier, who sprained his ankle early in camp, causing him to miss all four preseason games, practiced fully on Thursday and Friday.

"L.J. is back," Carroll said following Friday's practice. "He's ready to play in this game if we want to put him up, he can go. He had a great week, and that's a really good return for him. He worked really hard, he maintained his conditioning through the rehab. He looked really well-conditioned in the practices, it wasn't overburdening him at all."

Ansah, meanwhile, continues to work his way back from the shoulder injury that ended his 2018 season with Detroit. Carroll said Friday that Ansah is "getting really close. If he doesn't go this week, he certainly has a great chance for next week."

The Seahawks will be without five other players due to injury, including a pair of starters on defense, safety Tedric Thompson (hamstring) and defensive tackle Poona Ford (calf). Cornerback Neiko Thorpe (hamstring) will also miss this game due to an injury sustained last week. Out for a second straight game are receiver David Moore (shoulder) and center Joey Hunt (ankle).

With Thompson out, expect Lano Hill to start in his place. Hill started two games in place of an injured Thompson late last season and impressed his coaches, but in the second of those starts he sustained a hip injury that caused him to miss Seattle's playoff loss in Dallas.

"He has done really well," Carroll said of Hill on Friday. "He has come back to be back at full speed. He has been practicing with us for quite some time now. If he gets the chance to play, he's ready to go. We all remember that he finished really well last year, and he has jumped right back at it. He's ahead of where he was in terms of awareness of the scheme, what's asked of him and all of that. So we're very comfortable with him playing.

"He's really fast, he's 216 or something, good size. He was always a really good cover guy. One of the most physical tacklers—we thought he was the best tackler in the draft when he came out, and he has not disappointed since then. So he's got all of the right stuff, he just needed to kind of grow up with us and we feel like he has had the time to do that."

Collier won't be Seattle's only rookie making his debut on Sunday. Receiver John Ursua, a seventh-round pick out of Hawaii, is active after being inactive last week.  

Here are the inactive lists for both teams:

Seattle Seahawks

WR Gary Jennings
CB Neiko Thorpe
FS Tedric Thompson
C Joey Hunt
WR David Moore
DE Ziggy Ansah
DT Poona Ford

Pittsburgh Steelers

CB Justin Layne
FB Roosevelt Nix
LB Jayrone Elliott
G Fred Johnson
OT Chukwuma Okorafor
TE Zach Gentry
DE Isaiah Buggs