#4 Shane McMahon vs The Miz
Shane McMahon and The Miz officially became "The Best Tag-Team In The World" after beating The Bar for Smackdown's Tag-Team Championship at The Royal Rumble and this has many fans wondering "How long will this last"
History has shown that the odd time a McMahon has won a title, they have not held onto the said title for a long time. In the coming weeks, we are likely to see "The Best Tag-Team In The World" fall apart.
Ego vs. ego likely being the cause of the downfall and with two other major events between now and WrestleMania, the likelihood of this tag-team retaining the titles until WrestleMania is fairly slim.
One way or another, McMahon and Miz will lose the titles and one, most likely The Miz will not be happy with his partner when this happens and that will lead to the two meeting in the ring at Wrestlemania.
The Miz has been around long enough that they are starting to run out of things for him to do, but he's still valuable enough to keep in the WrestleMania picture...so why not have him face Shane?
I think this one the WWE Universe saw coming after McMahon stepped in and one The Best In The World title at Crown Jewel.