I see the Packers remaining undefeated, but I don't see them winning nearly as easily as they did last week against the Rams. The main reason I feel this way is injuries, particularly the concussion that will likely keep CB Sam Shields on the sideline. With Tramon Williams, Charles Woodson and Morgan Burnett already playing at less than full strength, the secondary could be in for another long day, even though it will be facing a rookie quarterback in Christian Ponder. I'm also more than a little bit worried about Vikings RB Adrian Peterson, who is coming off a subpar outing against the Bears. I have a sneaking suspicion this game could still be very much up in the air entering the fourth quarter. I think some late Aaron Rodgers heroics might be necessary.
Prediction: Packers 27, Vikings 22