#3 Ronda Rousey vs. Asuka

Speaking of possible all women main event scenarios, there is also the very likely option of going with Asuka vs. Ronda Rousey in the main event of WrestleMania 34. In fact, many already expect Rousey to enter the Royal Rumble as a surprise entrant and go on to face whoever is champion at WrestleMania 34.
So why not make it a main event match and capitalise on the crossover appeal of WWE vs. UFC in the main event of WrestleMania.
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Not only that, it also gives WWE the opportunity to capitalise on both Asuka's popularity with the WWE Universe and the possibility of her streak actually coming to an end at the hands of Rousey.