While the Vikings wait to see if Brett Favre is able to play Sunday, they have no concerns this week with the availability of Pro Bowl running back Adrian Peterson, who was questionable for the Buffalo game last week because of a sprained right ankle.

Peterson worked out before the game last week and had to lobby coach Leslie Frazier and the medical staff to let him play. He responded by rushing for 107 yards and three touchdowns on 16 carries.

Frazier joked in his postgame talk with the team about how he nearly de-activated Peterson.

"I thought I had showed enough [in pregame warmups]," Peterson joked Friday. "But I had to kind of lobby and tell them, 'Hey, I'm good. I can go.' Good thing he let me roll." Peterson said his ankle responded favorably after the game. "It felt pretty good," he said. "It was sore obviously after playing on it. But I can say it felt better than it did last week coming into it. [Head athletic trainer] Eric Sugarman and those guys do a good job of taking care of me, getting me right. I'll be ready to roll." Peterson didn't look like he lost his explosiveness on his 43-yard touchdown run, but he said he felt it at different times. "When I was able to turn up and run straight, I really wasn't feeling it too much," he said. "But on certain cuts and different things like that during the game I felt it. But it was mind over matter. You have to play through some pain. I was able to do that." Peterson said his ankle improved "a lot" this week. "I feel good, a lot better than I did last week," he said. "Last week I didn't know coming into Saturday if I would be able to go or not. But it's not a question this week."