San Francisco, CA (Sports Network) - San Francisco 49ers quarterback Alex
Smith left Sunday's game against the St. Louis Rams with a concussion.
Smith suffered the concussion late in the first quarter on a quarterback
scramble. As he began to slide, he turned his back to linebacker Jo-Lonn
Dunbar, who hit Smith around the neck area.
Smith stayed in the game temporarily and even threw a touchdown pass to
Michael Crabtree in the second quarter.
Colin Kaepernick replaced Smith later in the frame.
The Sports Network