#2 Heel Roman Reigns vs Face Dean Ambrose
Roman Reigns and Dean Ambrose have faced each other only once one on one and that was for the WWE World Heavyweight Title which ended with Reigns winning before Sheamus cashed in The money in the bank contract.
Reigns is currently set to face Brock Lesnar for the Universal title in a steel cage match at the Greatest Royal Rumble, with rumors suggesting Reigns will emerge victorious. Following this, Reigns will face Samoa Joe at Backlash, and it will probably be another high profile victory for The Big Dog of WWE.
Reigns can appear the following week on Raw and gloat about his achievements of being the only one to slay The Beast for the title and defeat Joe without needing anyone's assistance and can take a few shots at his Shield brothers.
This might lead to Ambrose interrupting him and having a few words with Reigns. It will lead to The Big Dog losing his temper and attacking Ambrose and finally turning heel.
Reigns is capable of delivering a heelish promo effortlessly and we have seen what a cocky champion he can be before. This might allow him to be finally accepted by the fans and booed off the building less frequently.