Jacobs was listed as a limited participant at Wednesday's walk-through practice due to a rib injury, Rachel Gossen of the Raiders' official site reports.
Jacobs has two more opportunities to increased his participation ahead of Sunday's game against the Chargers. However, at this stage, there's nothing to suggest that the running back's Week 18 status is in peril. If Jacobs is able to put in a full practice by Friday, he'll have a good chance to head into the weekend minus an injury designation.