Before she was rockin' pom poms, Houston Texans cheerleader Antonieta was a real deal BOXER ... and she tells TMZ Sports she REALLY wants to fight Ronda Rousey!
The 28-year-old stunner -- who's only been on the squad one season -- was a state champ in Texas back in 2005 ... and says she still has a burning passion for the sweet science.
"I recently sparred against the number two ranked Olympian boxer ... and did pretty well."
As far as fighting Rousey would go, Antonieta says she's open to an MMA fight ... and she's already got a game plan.
"If I can give her hooks and jabs and prevent her from taking me down ... it's possible that I could get her!
Now, let's get serious ... Antonieta knows Rousey is a beast -- but says it would just be an honor to get in the ring with her ... and she's not afraid.
That makes one of us.