#4 Asuka and Nia Jax
This is a bit of a tie, as it takes both of them to pull off what I can't help but feel is going to be one of those tricky moves WWE will make in order to have their cake and eat it, too.
The easy call for the women's Royal Rumble match is to have the undefeated Asuka win as, well, she's undefeated. Of course, she would win, right?
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What isn't so simple is what you do with the SmackDown Women's Championship if that happens, as the blue brand is in no shape whatsoever to build a proper women's title feud out of the roster they're working with.
That will be elaborated on later in this list, but for now, if you're focusing on how Asuka needs to lose, the only way to go about doing that is to have Nia Jax—the most physically imposing woman in the entirety of WWE, not just Raw—be the one to take her out of the match.
This could happen in a multitude of ways ranging from the simplest of having her toss her over the top rope, to the more complicated where she attacks Asuka and injures her, forcing her to be removed from the match.
If the latter happens, that can be the excuse for why she's still undefeated, as she didn't actually get eliminated from the match, but still came up short.
This would also be payback for Asuka's attack on Jax's legs from the last episode of Raw, and it can even be partially motivated by Nia's friendship with Alexa Bliss, who clearly is afraid of Asuka.
The more Bliss tries to drive a wedge between Jax and Asuka, the more likely it seems that we will get a Triple Threat at WrestleMania between the three, in which case it doesn't make as much sense for Asuka to win the Royal Rumble and suddenly have another contender join her despite that person losing.
Look out for Asuka to be the kayfabe favourite to win, but fall victim to the wrecking ball of Jax, furthering the story between the two and opening up the win to someone later on this list.