Minnesota Vikings running back Adrian Peterson (28) celebrates with teammate Jerome Felton, right, after scoring on a 1-yard touchdown run during the first half of an NFL football game against the Chicago Bears Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings running back Adrian Peterson, right, carries the ball during the first half of an NFL football game against the Chicago Bears Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings cornerback Josh Robinson, right, celebrates with teammates Jasper Brinkley (54) and A.J. Jefferson, center, after intercepting a pass during the first half of an NFL football game against the Chicago Bears Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Andy King)

Minnesota Vikings running back Adrian Peterson, center, scores on a 1-yard touchdown run during the first half of an NFL football game against the Chicago Bears Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Andy King)

Minnesota Vikings running back Adrian Peterson, left, tries to break a tackle by Chicago Bears safety Chris Conte during the first half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Andy King)

Minnesota Vikings running back Adrian Peterson (28) runs from Chicago Bears safety Major Wright, left, during the first half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Andy King)

Chicago Bears quarterback Jay Cutler, right, runs from Minnesota Vikings defensive end Brian Robison during the first half of an NFL football game, Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings quarterback Christian Ponder, left, is sacked by Chicago Bears defensive end Corey Wootton during the first half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Andy King)

Chicago Bears wide receiver Brandon Marshall (15) tries to break a tackle by Minnesota Vikings linebacker Erin Henderson, left, after making a reception during the first half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Chicago Bears wide receiver Alshon Jeffery, left, makes a 23-yard touchdown reception ahead of Minnesota Vikings cornerback Josh Robinson during the first half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Chicago Bears wide receiver Devin Hester (23) runs from Minnesota Vikings defensive end Everson Griffen during the first half of an NFL football game, Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Andy King)

Snow covered trees are seen outside the Mall of America Field at the Hubert H. Humphrey Metrodome before an NFL football game between the Minnesota Vikings and the Chicago Bears, Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Andy King)

Chicago Bears wide receiver Alshon Jeffery, center, celebrates with teammate Brandon Marshall, right, in front of Minnesota Vikings cornerback Josh Robinson after catching a 23-yard touchdown pass during the first half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Chicago Bears quarterback Jay Cutler (6) scrambles during the second half of an NFL football game against the Minnesota Vikings Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Andy King)

Chicago Bears wide receiver Brandon Marshall (15) makes a reception over Minnesota Vikings cornerback Antoine Winfield (26) during the second half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings safety Harrison Smith (22) runs with the ball after intercepting a pass during the second half of an NFL football game against the Chicago Bears Sunday, Dec. 9, 2012, in Minneapolis. Smith returned the interception 56-yards for a touchdown. (AP Photo/Andy King)

Minnesota Vikings running back Adrian Peterson, right, tries to break a tackle by Chicago Bears linebacker Nick Roach, center, and cornerback Charles Tillman, left, during the second half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Chicago Bears cornerback Charles Tillman (33) sits on the bench during the second half of an NFL football game against the Minnesota Vikings, Sunday, Dec. 9, 2012, in Minneapolis. The Vikings won 21-14. (AP Photo/Andy King)

Chicago Bears wide receiver Brandon Marshall, center, catches a 16-yard touchdown pass between Minnesota Vikings cornerback Josh Robinson, left, and cornerback Antoine Winfield, right, during the second half of an NFL football game, Sunday, Dec. 9, 2012, in Minneapolis. The Vikings won 21-14. (AP Photo/Andy King)

Minnesota Vikings running back Adrian Peterson, right, talks with Chicago Bears running back Matt Forte, left, after an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. The Vikings won 21-14. (AP Photo/Genevieve Ross)

Minnesota Vikings head coach Leslie Frazier looks on during the second half of an NFL football game against the Chicago Bears Sunday, Dec. 9, 2012, in Minneapolis. The Vikings won 21-14. (AP Photo/Genevieve Ross)

Minnesota Vikings quarterback Christian Ponder, right, reacts with teammate wide receiver Michael Jenkins during the second half of an NFL football game against the Chicago Bears Sunday, Dec. 9, 2012, in Minneapolis. The Vikings won 21-14. (AP Photo/Genevieve Ross)

Chicago Bears quarterback Jay Cutler, right, runs from Minnesota Vikings safety Harrison Smith, left, and defensive end Everson Griffen (97) during the second half of an NFL football game Sunday, Dec. 9, 2012, in Minneapolis. The Vikings won 21-14. (AP Photo/Genevieve Ross)

Minnesota Vikings running back Adrian Peterson (28) rushes between Chicago Bears' Nate Collins, left, and Lance Briggs, right, during the second half of an NFL football game, Sunday, Dec. 9, 2012, in Minneapolis. The Vikings won 21-14. (AP Photo/Andy King)

Dec 9, 2012; Minneapolis, MN, USA; Fans walk through the snow before entering the Metrodome before the the game between the Chicago Bears and the Minnesota Vikings. Bruce Kluckhohn-USA TODAY Sports