The Vikings haven't made big plays in the passing game ever since Percy Harvin was lost for the season with a severely sprained left ankle against Seattle on Nov. 4. They finally did it Sunday, but it was the defense that made it happen.
Robinson and Smith combined for 100 return yards, more than the Vikings' passing game had through the air.
Now the Bears must try to hold off another December malaise under coach Lovie Smith. They started 7-1, but Smith tried to ratchet up the intensity this week, saying the Bears had to win out to get into the playoffs.
Through six games, the Bears gave up an average of 71 yards rushing. But they had given up 136 yards per game on the ground in the previous six games.
"It's all willpower, man," Peterson said. "They pretty much know we're going to run the ball. Offensive line knows that, receivers. Everybody's dialed in."
NOTES: Vikings CB A.J. Jefferson suffered a concussion in the fourth quarter. He will be evaluated on Monday. ... Marshall joined Jerry Rice, Marvin Harrison and Wes Welker as the only players in history with at least four seasons of 100 or more receptions. Marshall also set the all-time Bears record with his 101st catch this year. ... Bears K Robbie Gould did not kickoff on Sunday after straining his left calf in pregame warm-ups. He did kick the Bears' two extra points.
Online: http://pro32.ap.org/poll and http://twitter.com/AP_NFL
Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.