Coming off their bye week, the Bears stayed at home for a Week 9 NFC North rematch with the Detroit Lions.  In the first quarter, Chicago drew first blood as kicker Robbie Gould got a 36-yard field goal, while QB Kyle Orton got a 5-yard TD run.  In the second quarter, the Lions responded with RB Kevin Smith getting a 1-yard TD run, along with QB Dan Orlovsky completing a 17-yard TD pass to WR Calvin Johnson and a 14-yard TD pass to WR Shaun McDonald.  The Bears would respond with Gould getting a 41-yard field goal, yet Detroit replied with kicker Jason Hanson getting a 52-yard field goal. In the third quarter, Chicago began to rally as QB Rex Grossman completed a 6-yard TD pass to WR Rashied Davis.  In the fourth quarter, the Bears completed their comeback as Grossman got a 1-yard TD run.  The Lions tried to come back, but Chicago's defense prevented any possible rally from happening. Kyle Orton (8/14 for 108 yards) left the game in the second quarter with a sprained right ankle. Q1 - CHI - 11:19 - Robbie Gould 36 yd FG (CHI 3-0) Q1 - CHI - 4:40 - Kyle Orton 5 yd TD run (Gould kick) (CHI 10-0) Q2 - DET - 13:25 - Kevin Smith 1 yd TD run (Jason Hanson kick blocked) (CHI 10-6) Q2 - DET - 13:14 - 17 yd TD pass from Dan Orlovsky to Calvin Johnson (Hanson kick) (DET 13-10) Q2 - DET - 6:55 - 14 yd TD pass from Dan Orlovsky to Shaun McDonald (Hanson kick) (DET 20-10) Q2 - CHI - 4:46 - Robbie Gould 41 yd FG (DET 20-13) Q2 - DET - 1:10 - Jason Hanson 52 yd FG (DET 23-13) Q3 - CHI - 7:05 - 6 yd TD pass from Rex Grossman to Rashied Davis (Gould kick) (DET 23-20) Q4 - CHI - 5:44 - Rex Grossman 1 yd TD run (Gould kick) (CHI 27-23)
Question: How many points did Chicago win by?
Answer: 4