#2 Brock Lesnar cashes in and fails
Only a small handful of WWE wrestlers have failed when trying to cash in Money in the Bank, but it's probably safe to say that most fans believe that Brock Lesnar will not end up being on that list after this coming Friday's show.
But, one way to shock people would be to have Lesnar fail at cashing in his Money in the Bank contract on Seth Rollins, which should end up leading to "The Beast" officially making the move to SmackDown Live.
As previously mentioned, WWE needs for SmackDown Live to have big ratings on the Fox network if the move is going to be considered a success, and one way to keep the ratings up, at least for a little while, is to have Brock Lesnar appear as a regular character.
So, Lesnar failing to cash in could signal the end of his run on WWE's red brand.