#1 Becky Lynch Vs Ronda Rousey
These two women along with Charlotte Flair headlined Wrestlemain 35, marking the first time women headlined the Showcase of the Immortals. The match was a closely-contested affair, which saw Becky come out on top after reversing Rousey's attempt at the Piper's Pit maneuver with a successful pinning combination. The Baddest Woman on the Planet was visibly furious with the referee's decision, sowing the seeds for a future clash with Becky Lynch.
Ronda Rousey does not have any storylines at the moment, and is reportedly injured and on hiatus. Otherwise. Becky and Ronda could have followed in the footsteps of Rock and John Cena and set up a singles match at next year's WrestleMania. Whenever Rousey returns, if Becky is still champion, she can demand a rematch for the Raw Women's Championship.
This will surely cause goosebumps for the fans, but it all depends on how WWE takes the feud to the next level. One possible way is to keep Becky and Ronda Rousey on separate shows until their eventual encounter, but Vince McMahon may want to strike while the iron is still hot and schedule a match at an earlier date.