He carried just four times for 23 yards with Cadillac Williams taking the majority of the action in the backfield.
Jackson was limited in practice Thursday and Friday with a right quadriceps injury sustained on a 47-yard scoring run on his first carry of the season in the opener. Jackson did not play in Monday night's loss at the New York Giants and had been questionable.
Ravens left guard Ben Grubbs was inactive with a toe injury. Wide receivers Lee Evans (ankle) and David Reed (shoulder) also were inactive. Cornerback Chris Carr, who had been questionable with a thigh injury, played.
Andre Gurode started in Grubbs' place.
Rams rookie wide receiver Greg Salas was inactive. He was wearing protection for a rib injury in practice.
Information from The Associated Press contributed to this report.