National Football League

Rams RB sidelined with left arm injury

Published Jan. 1, 2012 3:24 p.m. ET

foxsports

St. Louis Rams running back Steven Jackson injured his left arm in the third quarter and the team said his return was questionable.

Jackson appeared to be hurt after dropping a low screen pass and then tackled hard by a pair of San Francisco 49ers. He left for the locker room with about five minutes to go in the third quarter Sunday.

Jackson had 76 yards on 16 carries, a huge improvement over the first meeting at San Francisco in early December when he was held to 19 yards on 10 carries.