Here's a look at a key matchup heading into Thursday night's Week 11 battle between the Bears and Dolphins.
RBs Ronnie Brown and Ricky Williams vs. Bears' run defense
After holding the Vikings' Adrian Peterson to a season-low 51 yards rushing on 17 carries in Week 10, the Bears are charged with the less daunting task of stuffing Brown and Williams.
Miami is ranked 19th in rushing offense and is gaining just 3.8 yards per carry, while the Bears, thanks in part to the sure-tackling of MLB Brian Urlacher and the push generated by DE Julius Peppers up front, have the No. 2 run defense in the league, allowing 82.3 yards per game and 3.5 yards per carry.
It won't help the Dolphins' cause if OLT Jake Long, who reportedly underwent an MRI for a shoulder injury after Sunday's game against the Titans, is unable to play or is at less than 100 percent. He's known more for his ability as a pass protector, but Long also does a good job of getting a push in the ground game.
Expect offensive coordinator Dan Henning to give the Bears some looks out of the "Wildcat" formation. There's a chance it could give Chicago some problems, since the team only has a short period to prepare for it before Thursday night.
Williams is powerful enough to break through even a stout run defense, as he did Sunday against the Titans (11 carries for 64 yards), and Brown, who gained just 12 yards on 11 carries against Tennessee, can be an elusive runner. Peterson is a better back than both of them, though, and he was unable to get going against the Bears.