RENTON, Wash. — The Seahawks on Friday officially listed three running backs as questionable to play due to injury for Sunday's 1:25 p.m. game against the 49ers — Alex Collins, Rashaad Penny and Travis Homer.
What isn't questionable is that veteran Adrian Peterson is ready if needed.
Peterson, signed to Seattle's practice squad on Wednesday, took part in his second practice on Friday and had "a really, really productive week," according to coach Pete Carroll.
Carroll wouldn't fully commit to Peterson playing Sunday, saying, "We'll see how it goes this weekend," but made it clear that he's ready if needed, noting that he played in three games with Tennessee last month, most recently on Nov. 21.
Collins has started the last seven games since Chris Carson was sidelined with a neck injury that requires surgery but is dealing with a nagging abdomen injury.
Homer (calf) and Penny (hamstring) each sat out Monday's game against Washington.
It was those injuries that compelled the Seahawks over the weekend to reach out to Peterson, who was waived by Tennessee on Nov. 23 after gaining 82 yards on 27 carries.
All three practiced Friday — Penny and Homer were full participants and Collins was limited — and Carroll didn't rule out any. But he also wouldn't say who might play.
"They all got work this week, so we've just got to figure out who's OK and who isn't on Sunday," Carroll said.
Seattle also has DeeJay Dallas available.