#2 Becky Lynch

One of the most compelling things during Rousey's one year with WWE has been her feud with Becky Lynch. Their scheduled match at Survivor Series was called off after Becky suffered a "broken face" at the hands of Nia Jax, building up further anticipation for their eventual match.
Now that the Man has won the Royal Rumble match, the match has been set for WrestleMania for the Raw Women's Championship. She is the most over wrestler on the entire WWE roster, including the ever-popular Baddest Woman on the Planet.
Look who just shut down all of Tony Khan's critics! More HERE.
Becky has been getting consistently loud reactions from the WWE fans for months now and it does not look like slowing down even one bit, with her challenging for Rousey's title at WrestleMania.
The current champ would be the perfect foil for the Irish Lass Kicker's rise. A fiery program would get even more intense if Ronda Rousey is to find her inner killer and unleash it on Becky in the lead-up to their huge match. It would only make 'The Man's' victory sweeter.
The Face vs Face route is also fine, as long as they visibly hate each other, but there is one small problem with that...