10. Brock Lesnar
It seems like an inevitability that Daniel Bryan will end up facing Brock Lesnar at some point if he continues to hold the WWE World Heavyweight Championship through the summer. Lesnar and Paul Heyman have made it clear in past promos that the company's top title is a future goal for Lesnar and Bryan is one of the few top stars Lesnar has yet to feud with in this run. http://www.youtube.com/watch?v=QVh19RNGl_g SummerSlam needs a big match to market, and Lesnar vs. Bryan would definitely be a very big deal, but WWE would have to treat the feud right so it lived up to the potential we all know this program would have. Bryan can't simply be used to put Lesnar over and get him the title. This has to end up being a David vs. Goliath situation where Bryan comes away having defeated The Beast Incarnate. Bryan could drop the title to Lesnar and then win it back later or he could simply retain the title. Either way, WWE gets a lot of potential new subscribers to their network and the fans get a match that will definitely be exciting.