The Bears (6-4) are tied atop the division with the Lions (6-4), one game ahead of the Packers (5-5). On Sunday, Detroit hosts Tampa Bay and Green Bay entertains Minnesota.
Quarterback Josh McCown will make his second straight start and third in four games for the Bears in place of the injured
Appearing in the last four games, McCown has completed 61 of 101 passes for 754 yards with five touchdowns, no interceptions and a 100.0 passer rating that ranks seventh in the NFL among quarterbacks with at least 100 passing attempts.
McCown has played in four career games with two starts against the Rams (all in 2003-04), completing 43 of 68 passes for 515 yards with two TDs, no interceptions and a 96.1 passer rating.
The Bears offense is also led by running back
Sunday's game will feature a match-up between brothers, Bears rookie right guard
The strength of the Rams defense is their line, specifically ends Chris Long and Robert Quinn, who ranks second in the NFL and first in the NFC with 12 sacks.
The Bears have been decimated by injuries on defense and will play without three Pro Bowlers in cornerback
The Rams offense is led by quarterback Kellen Clemens, who assumed the starting job after Sam Bradford suffered a torn ACL Oct. 20 in Carolina. In four games, Clemens has completed 46 of 86 passes for 634 yards with three TDs, two interceptions and a 79.3 passer rating.
Rams running back Zac Stacy ranks second in the NFL among rookies in rushing with 537 yards and three touchdowns on 129 carries. The fifth-round pick from Vanderbilt will face a Bears run defense that has allowed an average of 182 yards in its last four games.
The Bears hold a 52-35-3 advantage in the all-time series between the teams, having won four straight after losing four in a row. Two of those victories came in St. Louis in 2006 and 2008.
The Bears won the last meeting 23-6 on Sept. 23, 2012 at Soldier Field. Chicago's defense generated six sacks and two takeaways, returned an intercepted for a touchdown, and held the Rams to a pair of Greg Zuerlein field goals.
In total yards, the Bears offense ranks 9th in the NFL (18th rushing and 10th passing), while the Rams defense ranks 19th (18th against the run and 14th versus the pass). The Bears defense is 24th overall (31st against the run and 17th versus the pass, while the Rams offense is 27th (22nd rushing and 21st passing).