Turns out Brock Lesnar wasn't the only UFC title winner at WWE SummerSlam Sunday night. 

UFC women's bantamweight champion Ronda Rousey -- whose love of pro wrestling prompted her to form a "Four Horsewomen" training faction with fellow  MMA fighters Marina Shafir, Shayna Baszler and Jessamyn Duke -- was at the Staples Center in Los Angeles on Sunday night enjoying the show with her mates.

The Horsewomen -- a play off of "Nature Boy" Ric Flair's "Four Horsemen" faction -- even made it backstage, snapping pictures with WWE Superstars that appeared on WWE's verified Twitter account. Rousey sported a "Rowdy" Roddy Piper T-shirt (both Piper and Rousey are proteges of legendary grappler "Judo" Gene LeBell), while Shafir, Baszler and Duke wore "I'm a Paul Heyman Girl" T-shirts, showing their support for the manager of Lesnar heading into Lesnar's WWE World Heavyweight Title match against champion John Cena later in the evening.

Heyman told FoxSports.com earlier this week that he'd love to someday manage Rousey if she decided to trade the octagon for the squared circle.

"She has absolutely unlimited potential and is a true mainstream star," Heyman said. "And she's someone who has an appreciation for and passion for the industry."

On this night, though, the "Four Horsewomen" were merely spectators for a pair of women's bouts. Paige regained her WWE Divas title by defeating AJ Lee. (Ironically, part of Paige's win included escaping AJ's black widow armbar submission, something Rousey's opponents never manage.)

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Then, in a grudge match that has included both combatants having the other "arrested" in recent weeks, WWE executive Stephanie McMahon defeated WWE Diva Brie Bella.

McMahon hadn't competed in a WWE match in more than a decade, but the offense she brought at Bella earned her a "You still got it!" chant from the crowd.

Bella wouldn't give up, even delivering a dropkick through the ring ropes to take out McMahon's husband, Triple H, when he tried to interfere.

But in a heel move that would make Rousey proud, Brie's twin sister Nikki turned on Brie and slugged her, allowing McMahon to land Triple H's pedigree finisher for the win.