Although WWE booked Evan Bourne to replace the  injured Randy Orton in the RAW main-event this week, the plan as of  press time was still for Orton to wrestle in the Fatal 4 Way main-event.
As has been reported, if it turns out that Orton cannot wrestle on  that show, the storyline plan is for Sheamus to lay Orton out and setup a  future feud between the two.  Evan Bourne has not, however, been  confirmed as the contingency wrestler should a replacement be needed,  with the names Triple H and Chris Jericho  also being thrown around as possible Fatal 4 Way substitutes.
– In an update to the Orton injury, which he suffered in the days  leading up to Over the Limit, the latest word is that he first hurt the  shoulder going for a dunk in a pick-up basketball game.
Partial Source: F4WOnline.com