It looks like a change was made within the last 24 hours to the Raw and SmackDown rosters.
As of this writing, Tucker is now listed as part of the SmackDown roster. It's not clear if this is just an error or if this is a permanent move.
The move would make sense since Tucker turned on Otis to cost him the Money In The Bank contract at the WWE Hell in a Cell pay-per-view.
Aside from the Survivor Series, they wouldn't have a chance to fight each other and this looks like a long-term feud and the only way to keep them together each week would be to move Tucker back to SmackDown or Otis to Raw.
Tucker did not appear this week on WWE Raw.
UPDATE: Tucker is still part of Raw but things are not looking good for his heel run. Click here for more on the story.