Raiders added right-of-the-back Jackson Powers-Johnson to their injury report on Friday.
He did not train on Friday with a concussion.
Powers-Johnson was not part of the injury report Thursday, so he was unknown when he was injured.
It seems unlikely that Power-Johnson will pass the concussion protocol before the match on Monday evening against the loaders.
Veteran Alex Cappa would start for Powers-Johnson.
Brock Bowers (knee) did not train for a second consecutive day.
Michael Mayer and Ian Thomas are behind Bowers on the depth painting.
Second Elandon Roberts (ELBOW) returned to limited work on Friday after missing the session on Thursday.
