The Viper who has had a very quiet couple of years may be given the Rumble as a way to make up for doing nothing with him. Orton has won it once before and, to be fair to him, he is most definitely a veteran; veteran enough to win it twice. Much like Daniel Bryan he can have a great match with pretty much anyone as long as he puts in the effort so regardless of who is champ at Mania, youll have a great match. The only downfall really is that its a safe bet and Im not sure too many people would be that excited by the result.