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