Two decades ago, when mixed martial arts went mainstream, the sport’s mostly male fan base often viewed women’s MMA as an inappropriate spectacle, something reserved for Worldstar videos, a 3 a.m. brawl at Waffle House, or both. Two fighters changed that perception: Gina Carano and Ronda Rousey . A powerful striker with a muay thai background, Carano emerged in the late-aughts as the sport’s first breakout female star. But she never made it to the Ultimate Fighting Championship , which remained uninterested in women’s MMA for another half decade or so. That’s when Rousey, a world-class judoka , hip-tossed her way into the limelight , flattening nearly every woman she faced in the early to mid 2010s . Carano and Rousey never fought in their primes. But on May 16, the sport’s first two female stars will finally square off in Netflix's first-ever live MMA event, part of a card put together by Most Valuable Promotions . In the lead up to the bout, we ranked the top 10 female UFC fighters of all-time.…