"We're still going to take him out on Sunday morning, just to see how he moves around, make sure he's confident in what he has to do to play in the game," Frazier said. "He did a much better job than we thought he would today, so we're optimistic."
It's not quite as clear-cut for Hutchinson, who didn't practice all week and is trying to figure out how effective he can be with a cast on his right hand. Hutchinson is "very likely" to start, the Minneapolis Star Tribune reported Saturday. Hutchinson, in his 10th NFL season, has started 131 consecutive games, including playoffs, since 2003, according to the newspaper.
The status of Harvin, wide receiver Greg Lewis (concussion) and defensive end Ray Edwards (high ankle sprain) all will be game-time decisions.
Frazier said Harvin got the migraine, which has been a recurring problem for him for most of his adult life, during practice Wednesday and will be further evaluated Saturday. He hasn't missed a game this season despite having the headaches several times during the week of practice.
"I don't know if it's any worse than what it has been in the past," Frazier said. "We had episodes along the way over of the course of his time here. We just have to continue to deal with it and hopefully manage it as we go forward."
Peterson was injured during the second quarter of last Sunday's game at Washington, and rookie Toby Gerhart responded with the best game of his career, rushing for 76 yards and his first touchdown in the 17-13 win.
"If he's able to go, he would definitely start," Frazier said of Peterson. "Now, what his workload would be would be determined by what he tells us, how he's feeling."
Cornerback Chris Cook was ruled out, with team doctors wanting him to rest both knees. The rookie tore the meniscus in both knees earlier this year.
"Just advice that we got from the doctors where he needs to rest," Frazier said. "He needs to get off his legs, so that's what we're going to do. Try to get him back next week."
The Associated Press contributed to this report.