Jacobs (hip) wasn't spotted at the start of Thursday's practice, Paul Gutierrez of ESPN.com reports.
We'll have to see if the running back officially ends up listed as limited or as a non-participant Thursday. If he does go down as a non-participant for the second day in a row, then what Jacobs is able to do on the field Friday will be telling with regard to his status for Sunday's game against the Patriots.