Rams' T.J. McDonald (leg) carted off
Trainers immediately put an air cast on McDonald's right leg, and he was carted off.
St. Louis cornerback Cortland Finnegan sustained a thigh injury in the second quarter and his return was doubtful. Finnegan was hurt covering Anquan Boldin on a 20-yard touchdown pass from Colin Kaepernick 6:20 before halftime.
San Francisco backup wide receiver Quinton Patton's return was questionable after a first-quarter foot injury.
Copyright 2013 by The Associated Press