Here's a look at a key matchup heading into Sunday's Week Six battle between the Seahawks and Bears.

Bears' new-look offensive line vs. Seahawks' run defense

Getting the running game going early for the second consecutive week would take some of the pressure off QB Jay Cutler in his return from a concussion. It likely won't be an easy task, though, for the Bears against one of the highest-ranked run defenses in the league on Sunday.

The Seahawks are ranked second in the league in rushing yards allowed per game (72.8) and they have only given up two rushing touchdowns. They haven't allowed a rush of more than 16 yards.

Seattle's front four is doing a good job of stuffing running lanes and keeping blockers off of MLB Lofa Tatupu. The Bears are expected to go with a new-look offensive line this week with Chris Williams returning from injury and moving from left tackle to left guard. The Bears are expected to go with OG Edwin Williams and OT J'Marcus Webb on the right side for the second straight week.

Seahawks DTs Brandon Mebane and Colin Cole could be able to control the game up front against Chicago's interior line, and 323-pound DRE Red Bryant will be a tough assignment as well.

RBs Matt Forté and Chester Taylor could often be greeted with a wall at the line scrimmage if Seattle's defensive line continues playing at a high level.