Almost no one on the team did his job well enough for the Bears to win.
Three aspects of the 49ers' victory stood out upon closer inspection.
•The Bears could not block outside linebacker Aldon Smith with one man, and they never stopped trying. Instead of treating him the way they treated DeMarcus Ware, they treated him the way they treated Clay Matthews. And the results were similar.
By the time the Bears figured this out, Davis had caught four passes for 69 yards and a touchdown, and the Bears were down 17-0.
•Mostly because of taking poor angles and not knowing where the play was headed, the Bears defenders allowed way too many yards after first contact.
The 49ers gained 120 yards after contact (not including plays in which the player who made first contact took the ball carrier down), which was 34 percent of their yardage total.
Here is what else we learned upon further review.
Grading key: Grades are between 0 and 10 with 0 being complete failure and 10 being perfect.
It was as if Wright saved all his poor play for one game. He had been so good in so many different aspects before Monday, but it all came unraveled against the Niners.
He struggled mightily to match up with Davis, tackled poorly in the open field and was called for a holding penalty.
Chris Conte hit Mario Manningham when Manningham clearly was out of bounds on the first play of the game and picked up an unnecessary roughness penalty that kick-started the 49ers.
The Bears have become dependent on their corners to make big plays. Not only did they not make big plays Monday, but they gave up some.