The Bears had not allowed 31 points in one half since the 1972 season opener.
After the half, the Bears buckled down on defense and didn't allow the Cougars to score again.
The Bears allowed 26 points versus the Giants in a season-opening loss.
The Bears had allowed an average of almost 30 points a game.
In beating the Ravens, the improving Bears allowed no touchdowns for the second straight week.
The Bears allowed an average of 12.5 points in the season's first 12 games.
The Bears have allowed only three second half points in their last three games.
Last season, the Bears allowed 21 touchdown passes; thus far this season, they have allowed 13.
The Bears allowed a 60-yard touchdown run and a blocked punt in the game's opening minutes.
Last season the Bears allowed 17 or fewer points in 12 of their games.
