Favre wasn't able to practice last week because of a sprained sternoclavicular joint in his throwing shoulder and the Vikings listed him as "out" on the final injury report on Saturday.
"Brett Favre tried to do some things prior to practice and that shoulder and arm is not quite where it needs to be, so he definitely won't participate on Monday night," interim head coach Leslie Frazier said on Saturday.
Head athletic trainer Eric Sugarman told the team's web site that Favre woke up Monday morning feeling "much improved."
"Brett Favre attempted to throw the football two days ago and was unable to, due to pain in the SC joint and residual numbness from a brachial plexus injury," Sugarman said. "He declared himself out at that time. He woke up this morning feeling much improved. His symptoms and function have improved dramatically over the past 24 hours. In fairness to him and his team, he would like to be given the opportunity to play tonight if physically able."
Favre will now work out a couple hours before Monday night's game "to see if he's physically able to play tonight," a Vikings spokesman said.
Frazier said on Saturday that Favre could throw, "but the pain is just too excruciating right now. That's what he has to get past."
"He tried to throw, just to see what kind of velocity he had on the football and how much pain he would have in throwing," Frazier said Saturday. "The pain was too much for what he would have to do on Monday night."
After 297 consecutive regular-season starts, Favre missed his first game since 1992 last Monday night against the New York Giants.
The Vikings also placed guard Steve Hutchinson on injured reserve with a fractured thumb and signed quarterback R.J. Archer to the active roster after having him on the practice squad last week.
Additionally, the Vikings have reportedly claimed quarterback Rhett Bomar off the Giants practice squad.
Tim Yotter is the publisher of Viking Update. Follow Viking Update on Twitter and discuss this topic on our message boards. To become a subscriber to the Viking Update web site or magazine, click here.
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