#4 Sadie Gibbs
Sadie Gibbs is a name that not many people around the world would be aware of right now, but she is making waves in Stardom (the same promotion that people like Toni Storm and Meiko Satumora made their name), and it's only a matter of time until she breaks out.
Gibbs is one of the most athletic performers in the world, male or female, and despite the fact that she's only just beginning to gain experience, she has an incredibly bright future ahead of her.
In recent times, GIFs of her incredible feats of athleticism (including the best Sasuke Special in the business) have gone viral on Twitter, and it's got the attention of The Young Bucks, who've both expressed their love for her work on Twitter.
The women's bout at Double or Nothing is set, but they will need a deep roster going into the future if women's wrestling is something they hope to excel at (which they will), so Gibbs is the perfect person to bring on board right now.