Ellington is questionable to return to Sunday's game at San Francisco due to a left foot injury, Josh Weinfuss of ESPN.com reports.
Both Ellington and Chris Johnson (left knee, questionable) suffered injuries in the third quarter, which places rookie David Johnson firmly at the top of the depth chart. Because head coach Bruce Arians prefers to use every option at his disposal, though, fellow running back Stepfan Taylor could also receive a few touches down the stretch.