San Francisco 49ers running back Mike Davis, left, is tackled in the end zone by St. Louis Rams defensive tackle Michael Brockers for a safety during the first quarter of an NFL football game Sunday, Nov. 1, 2015, in St. Louis.
San Francisco 49ers running back Mike Davis, left, is tackled in the end zone by St. Louis Rams defensive tackle Michael Brockers for a safety during the first quarter of an NFL football game Sunday, Nov. 1, 2015, in St. Louis. Billy Hurst AP
San Francisco 49ers running back Mike Davis, left, is tackled in the end zone by St. Louis Rams defensive tackle Michael Brockers for a safety during the first quarter of an NFL football game Sunday, Nov. 1, 2015, in St. Louis. Billy Hurst AP