Neither wind nor cold nor groin that's pulled will prevent Adrian Peterson from making his appointed rounds Sunday at Lambeau Field.

The Vikings' star running back said Thursday a sore groin won't keep him out of this week's game against the Green Bay Packers.

He clearly was slowed by the injury in last week's 41-20 loss at Seattle, rushing for just 65 yards on 20 carries, his least production game of the season. And he has not practiced this week.

Taking a game off to rest, however, is not an option.

“No, not at all,” Peterson said Thursday. “I don't think it's that severe, you know. Just rest and do the necessary things with treatment and I'll be OK.”

One more defeat and the Vikings (2-8) would ensure their fourth losing season during Peterson's seven-year tenure in Minnesota. He is clinging to the threadbare chance the Vikings could reel off six straight wins and somehow sneak into the postseason.

“I don't know how you all think, but I still think we've got a chance,” he told reporters. “Call me crazy, but I still feel like we have an opportunity. That's the way I'm going to approach this week and the rest of the season.”

The Vikings were 2-8 in 2011 en route to a 3-13 finish that matched the franchise's worst record since the NFL went to a 16-game schedule in 1978. Peterson was asked what he has seen this season that would prevent Minnesota from matching or exceeding that futility.

“The competition level, you know? A lot of games we have lost at the end of the game, the last minute of the fourth quarter,” he said. “We've done different things to put ourselves against the wall. I think that has something to do with the mind-set that we have because guys realize we had kind of gave a lot of games away. You don't want to do that, but it is what it is.

“With that, guys are still fighting. Guys are still practicing hard. Guys are still believing, and that's something that I sense that I didn't sense back then. We still have that now. And that's all we can ask for being 2-8.”

After rushing for 2,097 yards and being voted the NFL's most valuable player in 2012, he is on pace for 1,361 yards, which would be his lowest total over a full season since entering the league in 2007.

The groin injury is hampering Peterson's acceleration and ability to explode through tackles. Managing it is the team's top priority.

Vikings coach Leslie Frazier said Wednesday he was “cautiously optimistic” Peterson would play against Green Bay and that the team might hold him out until Friday's practice. Backup Toby Gerhart never carried more than once during the first nine games but had seven attempts for 67 yards against the Seahawks.

What if Frazier and trainer Eric Sugarman ordered Peterson to stand down this week?

“I'd look at them crazy,” he said. “I'd be like, 'Well, I know my body and I'm not going to do anything to hurt myself. Just trust me.' “