-- Unlike past years, the WrestleMania 34 card is still extremely unclear with the biggest question marks surrounding the status of Dwayne "The Rock" Johnson and the Undertaker. This uncertainty is preventing WWE from completely finalizing the major matches and storylines.
-- There is nothing new to report on either Rock or Undertaker but as of a few weeks ago, the idea was still to run with John Cena vs. Undertaker at WrestleMania.
-- As noted before, with Cena involved at the Elimination Chamber PPV, it would be a big reason why no storylines have begun with Undertaker as that would make no sense. If this match is still scheduled, expect things to pick up immediately after Elimination Chamber.
Source: Wrestling Observer Newsletter. Subscription information & prices available at f4wonline.com