The 49ers enter the fourth quarter trailing the St. Louis Rams 17-7. The Rams were driving down the field thanks to some big plays and some bigger penalties, but the 49ers defense stiffened up inside their 10. The 49ers start the fourth quarter with the ball and looking to make something, anything happen. Colin Kaepernick came in for Alex Smith after Smith suffered a concussion. Thus far CK hasn't been able to do much of anything. Let's hope that changes in the fourth quarter.