Williams was removed from Monday's game against the Browns with a concussion.
Williams did not catch a pass in Monday's game before being forced from the contest. He will enter the league's concussion protocol, so he will need to be cleared in order to play in the Ravens' next game against the Dolphins.
Brown (back) is inactive for Monday's game against the Browns.
Brown, who has recorded just 14 catches for 112 yards in 10 games to date, is off the fantasy radar, but his absence is another hit the Ravens' depth at wideout. Jeremy Butler or Kaelin Clay could see some additional looks in his absence, but neither are high-percentage Week 12 darts, with Matt Schaub now the team's starting QB.
Miller (ribs) will have a chance to play in Sunday's game against the Colts, Dale Lolley of the Observer-Reporter reports.
Miller will be limited early this week after suffering a rib injury in Sunday's loss to the Seahawks, but he may be able to avoid missing any further action. The Steelers will make a final call on Miller's status later this week, and if he is unable to go, either Matt Spaeth or Jesse James would get the start in his place.
Roethlisberger (head) is confirmed to have suffered a concussion during Sunday's loss to the Seahawks, Chris Adamski of the Pittsburgh Tribune-Reviews reports.
Roethlisberger erroneously said he didn't suffer a concussion, having reached that conclusion without seeing the results of his test. As it turns out, the test confirmed that he suffered a concussion, which means he'll now have to pass through the NFL's protocol. This is obviously rough news for both his owners and the Pittsburgh offense, but there's still a reasonable chance Roethlisberger will be ready for Sunday's game against the Colts, as his symptoms have already subsided. If Big Ben ultimately doesn't suit up, Landry Jones will get the start.