Ronda Rousey has shown nothing but respect towards Cat Zingano in the lengthy build to their Saturday night fight at UFC 184.

The reigning female bantamweight champion continued that during an appearance on “UFC Tonight” earlier this week.

“Cat is definitely the toughest opponent to date,” she said. “She’s the one I haven’t beaten yet. She’s the most difficult test yet. She’s undefeated for a reason. She’s a Brazilian jiu-jitsu black belt and I’ve never gone to the ground with one.

“I’m the best in the world and I’m going to win, but I do believe Cat will bring out the best out of me.”

Rousey, like Zingano, is unbeaten in her MMA career. The former Olympic bronze medalist has defeated the likes of Alexis Davis, Miesha Tate, Sara McMann and Liz Carmouche signing coming over from Strikeforce.

She also might just see her next contender moments before stepping inside the Octagon vs. Zingano, as former boxing world champion Holly Holm makes her UFC debut vs. Raquel Pennington.

“She was the boxing world champ and I’m very impressed with her so far,” Rousey said. “Being a boxer who’s had so many head-kick knockouts shows she’s evolved.

“She’s one of the biggest competitors in the division.”