Percy Harvin has been listed as doubtful for Sunday's game after being unable to practice on his badly sprained left ankle today. The Vikings aren't ruling him out and might wait until Sunday morning to make the call.

"He still has a little less than 48 hours to have a chance to continue to improve," coach Leslie Frazier said. "He'll continue to get treatment. If it comes to it, we definitely will work him out before the game to try and get him out there if it's possible."

Either way, Harvin's backup, rookie Jarius Wright, will be active for the first time in his NFL career.

"We were all teasing him, saying, `Are you ready for this prime-time action?'" Frazier said. "He's handled it well. He's pumped up about the chance to get some action."

Harvin is no longer on crutches but was seen Thursday in the locker room walking very slowly and not putting much weight on his left foot.

"He'd have to make quite a bit of recovery [Saturday] for us to say, `OK, we'll wait until Sunday to see what you can do [in a pre-game workout]'" Frazier said. "But it's possible. We've seen it happen before. So we're going to continue to treat him and see how he feels [Saturday]."

Meanwhile, running back Adrian Peterson returned and practice today after missing Thursday's practice because of a stomach flu. Peterson said he became ill at the team's practice facility early Thursday and went home.

"I'm feeling a whole lot better," Peterson said. "Just a little stomach bug. I was feeling just a little weak yesterday, but I woke up feeling a lot better."

Peterson was on the injury report with his nagging ankle injury, but practiced on it Wednesday and again Friday. He's listed as probable.

In other injury news:

  • Nose tackle Letroy Guion (turf toe) was limited in practice and is listed as doubtful. If he can't play, Fred Evans will get his third career start.
  • Also listed as probable after having full participation in Friday's practice were: fullback Jerome Felton (shoulder), left tackle Matt Kalil (knee), cornerback Antoine Winfield (knee), tight end John Carlson (concussion), punter Chris Kluwe (knee), safety Mistral Raymond (ankle), receiver Jerome Simpson (calf) and defensive end Jared Allen (shoulder).