Let's start off with the big one, the return of The Undertaker. By the time Sunday comes, it may not even be that much of a shock, as the internet is already lit up with speculation that he'll be appearing at Battleground. At this point, it looks very likely. PWInsider has reported he'll be at Raw on Monday, which is a big signal that the Battleground rumours are true. The shock factor could be what he ends up doing at the show. There's no certainty what his role is going to be, he could be going after anyone. In that respect, the shock may not be The Undertaker, but the action Undertaker takes. Maybe he'll call out someone totally unexpected or interfere in a match which he had no obvious business in. The best guess is that he'll interfere in the Rollins vs Lesnar match. He has reason to take issue with either man, Rollins for taking out Kane, or Lesnar for ending the streak.
