Via PFT:
"On Sunday, reports emerged that Favre couldn’t have played if the game had proceeded as originally scheduled, and then that Favre doubted he’d be able to play after the game was moved to Monday night in Michigan due to a snowstorm that collapsed the roof of the Metrodome like an inverted container of Jiffy Pop. Coach Leslie Frazier refuted the notion that Favre wouldn’t play, telling Peter King as of Sunday afternoon that Favre was more questionable (i.e., 50-50 chance of playing) than doubtful (25 percent chance)."
It’s as good of a confirmation as we’re going to get when dealing with Brett Favre — he LIKELY will not play tonight. But there’s always a chance!!