Peterson did not participate in practice on either Wednesday or Thursday, and is recovering from an ankle injury sustained against the Raiders in Week 11. But both Visanthe Shiancoe and and Kyle Rudolph have missed practice this week, and Christian Ponder and Percy Harvin have both been limited.
That's not a good sign for a team that can struggle on offense even at peak health.
Here's the full Vikings practice and injury report for Week 12.
DID NOT PARTICIPATE: Cornerback Chris Cook (not injury-related), safety Husain Abdullah (concussion), running back Adrian Peterson (ankle), tight end Visanthe Shiancoe (hamstring), tight end Kyle Rudolph (quadriceps).