source: WWE.com
Shawn Michaels defeated Randy Orton and Edge during the main event of RAW; therefore he will take on John Cena at WrestleMania for the WWE Championship.
So far the following matches are confirmed for WrestleMania 23:
WWE Championship
John Cena (c) vs. Shawn Michaels
World Heavyweight Championship
Batista (c) vs. Undertaker
