#2 Randy Orton wins clean
This is the most anticlimactic scenario of the lot, but definitely a very likely one too. Orton needs a big win to step back into the title picture once again. If Corbin becomes the US Champion, in particular, Orton may need some momentum to go up against the man.
Of course, Rusev does need a big win much more than Orton does, but Orton is one of the few marquee names on SmackDown Live, and WWE may want to protect his character with Cena having departed from the brand.
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There's also another possibility. WWE may want to extend this program over the forthcoming months, with the two men trading wins, much in the vein of The Usos and New Day. However, we think that the following scenario is the ideal one.