I'm not taking an unnecissary risks this time. Everything points to Batista to winning the Rumble, but I personally have something in the back of my head telling me Triple H will pull the ropes down, thus eliminating him.
WWE Royal Rumble Match
Batista, Booker T, Charlie Haas, Chris Benoit, Chris Jericho, Christian, Dan Puder, Eddie Guerrero, Edge, Gene Snitsky, Hardcore Holly, Jonathan Coachman, John Cena, Kane, Kenzo Suzuki, Luther Reigns, Mark Jindrak, Muhammad Hassan, Orlando Jordan, Paul London, Rene Dupree, Rey Mysterio, Ric Flair, Scotty 2 Hotty, Shawn Michaels, Shelton Benjamin, Simon Dean, The Hurricane, Viscera[/color]
Winner: John Cena
Final Four: Edge, Chris Jericho, John Cena & Simon Dean
Random Pick: Muhammad Hassan #27
WWE World Heavyweight Championship
Triple H (c) vs Randy Orton
Winner: Triple H via pinfall.
How: Pinfall after probable Batista interference.
WWE Championship
JBL (c) v Kurt Angle v The Big Show
Winner: JBL
How: Pinfall, most likely over Angle.
Casket Match
The Undertaker vs John Heidenreich
Winner: The Undertaker
How: Into the casket, with either a Chokeslam directly into the casket, or a Tombstone weakening Heidenreich.
Shawn Michaels vs Edge
Winner: Edge
How: Pinfall. Most likely after a Spear.
EDIT- I've changed my Final Four list.