Ravens starting left tackle Eugene Monroe remained out of practice Thursday, increasing the likelihood that he won't play Sunday against the Oakland Raiders.
Monroe sustained a head injury on the Ravens' first drive last Sunday against the Denver Broncos and is now in the league's concussion protocol.
If Monroe can't play Sunday, James Hurst is expected to take his place.
Wide receiver Breshad Perriman (knee) remained out of practice for the Ravens. Defensive veterans Chris Canty and Daryl Smith also weren't on the field, but they traditionally get Thursdays off to rest.
Listed as limited on Wednesday's injury report, running back Justin Forsett (shoulder) was practicing.