Jacobs (illness) didn't practice Friday, Tashan Reed of The Athletic reports.
In a rarity this season, Jacobs didn't appear on the first injury report of Week 6 prep, only to show up as a non-participant Thursday due to an illness. The ailment is keeping him out of drills for a second straight session Friday, so it remains to be seen how the Raiders will list him for Sunday's contest at Denver. Another absence for Jacobs likely would result in Peyton Barber handling most of the early down work out of the backfield, while Kenyan Drake and Jalen Richard would be poised for more snaps than usual.