David Montgomery deserves some of the blame for the running game's struggles. He ranks 71st among running backs on Pro Football Focus this season with a 58.6 grade. He's looked very much like a rookie runner at times, lacking patience and making one move (usually a spin move) too many.
The story said Monty is averaging just 3.3 yards per carry but it's not all his fault. The O-line hasn't been good at all. The story suggested the Bears could go to Cohen more, thanks to his ability to get more out of a play at times, something they did early against the Raiders but that was likely because they fell behind early. The story also seems to think Davis isn't much of an upgrade and Monty will continue to get his chances. The hope for owners is the bye week allows the Bears to figure some things out in the run game. Montgomery is hopefully a better RB option coming out of the bye for Week 7.