Peterson '50-50'

The Vikings listed running back Adrian Peterson as questionable on their Friday injury report, but that doesn’t mean he's going to play in Sunday's game at the New York Giants.

Realistically, that still isn't expected to happen until next week against Detroit, although questionable players, by definition, are supposed to have a 50-50 chance of playing.

"Yeah, there is a 50-50 chance that he will play," coach Brad Childress said. "That's like as professional fence riding as you can get, isn't it? That's the criteria right there. That's up to you with the pen on what side you decide to slant it, left handed or right handed."

Peterson, who tore the lateral collateral ligament in his right knee in a Nov. 11 loss at Green Bay, practiced on a limited basis for the third consecutive day.

He said the knee felt fine during practices, which obviously didn't include any contact, and wouldn't rule himself out for Sunday.

"I felt good out there today," he said. "(I’ll) just come in tomorrow and see how it feels and we'll make that decision when it's time."

Peterson has been wearing a knee brace in practice and said he will continue to do so when he returns, if not this week, then next week for sure.

Notes: Cornerback Antoine Winfield (hamstring) is doubtful and expected to miss his third game in the last four weeks.

Fullback Tony Richardson (knee) is questionable and safety Eric Frampton (groin) is probable.

Center Matt Birk missed practice because of a death in the family, but it won't affect his availability for Sunday.

For the Giants, running back Brandon Jacobs (hamstring) is out and running back Derrick Ward (ankle/groin) is doubtful.

Wide receiver Plaxico Burress (ankle) is questionable but will play.