The Bears visited Edward Jones Dome in St. Louis to play the Rams, again without Jay Cutler. However, the Rams were also without starting quarterback Sam Bradford, and instead had Kellen Clemens as backup. The Bears had won four consecutive games against the Rams. Two rookie players the Bears' defense had to contain were running back Zac Stacy, who recorded an average of 107.7 yards and three touchdowns in the previous three games, along with ranking second among rookie running backs with 537 rushing yards; and receiver Tavon Austin, who recorded 314 yards against the Indianapolis Colts in the previous week. Additionally, the Rams' offense was ranked fourth in the NFL with 54.6 percent of yardage occurring after the catch. For the Bears' offense, Jeff Joniak wrote they needed to avoid attempting to score in the red zone; in the previous three games, the Bears had 12 drives in the red zone, but managed to score only four touchdowns, while also allowing a turnover, and was ranked 13th after scoring 55 percent. Meanwhile, the Rams had forced quarterbacks to record only a 45.8 passer rating when in the red zone, along with the second lowest completion percentage, and the third fewest completions recorded. Also, St. Louis led the league in red zone interceptions with six. Finally, the Rams led the league in overall sack percentage with 9.4, while defensive end Robert Quinn had the most knockdowns and hurries in the NFL, and was second in sacks with 12. An advantage Chicago had, however, was the second-most passing touchdowns in the NFL with 15, while Josh McCown's average gain per pass is higher than Cutler's, with a 7.47 to 7.20. The Rams also did not have the capable secondary to cover the trio of Martellus Bennett, Alshon Jeffery and Brandon Marshall. St. Louis scored first on Austin's 65-yard run, and would reclaim the ball after James Laurinitis stripped Matt Fort&#233;, leading to Stacy's one-yard touchdown run. The Bears would then score on McCown's seven-yard touchdown pass to Bennett, but the Rams ended the quarter with a 21-7 lead after Clemens' six-yard touchdown pass to Jared Cook. In the second quarter, McCown threw an incomplete pass, which appeared to be a fumble, and after Rams cornerback Trumaine Johnson picked up the ball, Bears fullback Tony Fiammetta pulled him to the ground by the facemask. Kyle Long would then be involved in an incident with Rams defensive lineman William Hayes, which led to Long kicking Hayes, causing Long's brother Chris Long to restrain Kyle, who would then be penalized for a personal foul. McCown and Fiammetta would also be penalized, for intentional grounding and facemasking, respectively. Halfway through the quarter, Chicago scored after McCown threw a three-yard pass to Marshall, but Greg Zuerlein would score on a 29-yard field goal to give the Rams a 24-14 lead at halftime. The lone score of the third quarter was Zuerlein's 40-yard kick. Early in the fourth quarter, Hester recorded a 62-yard punt return for a touchdown, which was overruled by Craig Steltz's holding penalty. the Bears reached the Rams' one-yard line, but required eight plays: Michael Bush's run went for no gain; McCown's pass to Jeffery was incomplete, but a holding penalty on Brandon McGee gave the Bears a first down; Bush lost two yards on the following run; McCown's touchdown pass to Bennett was nullified by Jermon Bushrod's holding penalty; McCown's 13-yard touchdown pass to Fort&#233; was also nullified, after Fort&#233; failed to break the plane, instead placing the Bears back on the one-yard line; McCown was then sacked by Michael Brockers, but Brockers was penalized for roughing the passer; Bush failed to gain a yard on the next play; the Bears finally scored on the drive on Bush's one-yard run. On the Rams' ensuing drive, Benny Cunningham gained 27 yards, while the offense gained 48 yards from Clemens' 19 and 29 yards passes to Chris Givens and Cook, respectively. Four plays later, Cunningham scored on a nine-yard run, while Isaiah Pead scored on the two-point conversion. Devin Hester would fumble on the following kickoff, but recovered at the Bears' ten-yard line. After the Bears' offense reached their own 39-yard line, Quinn stripped McCown, and scored on the following fumble return. The game marked the third time the Bears allowed 40 points during the season for the first time since 1964. McCown set the team record for most completions with 36, two greater than Jim Miller's and Brian Griese's 34 set on November 14, 1999 and September 30, 2007, respectively. Fort&#233; recorded 77 yards in the game, adding to 6,178 career rushing yards, surpassing Neal Anderson to become the second-highest rushing leader in team history. The Bears' defense recorded the second-worst defensive output in 2013, with a negative-11.4, making the team's defense the second-worst in the NFL.. How many points were the Rams leading by at the end of the first quarter?