5. Brock Lesnar vs. Randy Orton
Randy Orton operating as a rogue babyface is an ideal position for the Viper at this point in his career. Orton's ability to heat up a feud in under two weeks has been evidenced via his work with Seth Rollins. Lesnar cutting promos about busting people up only to be interrupted by Orton who wants a shot would be fun. Does Orton conquer The Beast? No. Does he get some entertaining matches, and a possible career-making "RKO Outta Nowhere" moment? Definitely.