Can Bears get their own Kalil?

Maybe one of them will be the Bears' Matt Kalil.

Numbers games: Offensive regression

In the offseason, the Bears acquired Brandon Marshall, Alshon Jeffery and Michael Bush. They added a backup quarterback with a track record. They excised the root of all evil, Mike Martz.

Result?

They are worse by every major offensive measure.

Let's compare the 2012 offense through 10 games with the 2011 offense through 11 games, that way each offense is judged with one full game without Jay Cutler.

The current offense has scored two touchdowns per game compared to 2.2 from the 2011 version. The 2012 offense has gained 57.1 fewer yards per game. These Bears have converted third downs at a rate of .317 compared to .355 a year ago.

As for Marshall's impact, passing yards have gone down by 53.7 yards per game. Yards per pass attempt have dipped from 7.31 to 6.78. The interception percentage has been worse (from 2.8 to 4.0), the pass protection has been worse (from 2.4 sacks per game to 3.4) and the passer rating has been worse (82.3 to 77.8).

The running game numbers are down slightly. The 2011 offense averaged 4.5 yards per carry and 98.6 yards per game compared to 4.2 and 95.2 this year.

Front office chess: Juggling linemen

James Brown was going to be promoted from the practice squad at some point this season. Probably sooner rather than later.

It was a closely guarded secret, but the undrafted free agent had impressed the Bears coaches with his work in practice and in the weight room. His development was probably part of the reason Chris Williams was released.

Brown had made steady progress since training camp. The key to the story is he had branched out to play guard as well as tackle.

In fact, it won't be a surprise if his future is at guard. Brown was an offensive tackle at Troy, and he looked like a fish out of water at guard in the Senior Bowl. But he has taken to the position.

Brown's promotion was hastened after Chilo Rachal shocked everyone at Halas Hall when he abruptly left the team Wednesday after learning he was demoted. Rachal returned Thursday, but it was too late.

Brown already had replaced him.

dpompei@tribune.com

Twitter @danpompei

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