1. Randy Orton vs. Seth Rollins - WrestleMania 31
The Viper and the Architect are set to contest the WWE World Heavyweight Championship at Extreme Rules and there's little doubt that the pair will steal the show as they meet inside a steel cage. There are plenty of reasons why a Seth Rollins title run is a great move for WWE, but chief among them are the in-ring abilities that he brings to the main event. There are few athletes on the WWE roster that can claim the same level of mastery as Rollins, and having a workhorse such as him carrying the top title will undoubtedly prove some excellent bouts in the coming months. Randy Orton is the perfect opponent to kick off Rollins' reign. The pair are both individually outstanding paired together, their chemistry allows them to produce matches well beyond the sum of their parts. Orton is thoroughly energized at present, and Rollins is clearly relishing his spot at world champion. These are competitors who pride themselves on their abilities, and will be looking to showcase their craft when they meet at Extreme Rules. Moreover, both men are well-versed in ways and means of keeping a rematch fresh. Expect to see plenty of moments that call back their WrestleMania confrontation on Sunday and what better way to prepare yourself for the evening's main event by looking back at the duo's previous encounter.