San Francisco 49ers quarterback Alex Smith drops back to throw during the fourth quarter of an NFL football game against the Detroit Lions in San Francisco, Sunday, Sept. 16, 2012. (AP Photo/Tony Avelar)

Associated Press
San Francisco 49ers quarterback Alex Smith drops back to throw during the fourth quarter of an NFL football game against the Detroit Lions in San Francisco, Sunday, Sept. 16, 2012. (AP Photo/Tony Avelar)
San Francisco 49ers quarterback Alex Smith drops back to throw during the fourth quarter of an NFL football game against the Detroit Lions in San Francisco, Sunday, Sept. 16, 2012. (AP Photo/Tony Avelar)
View Comments