Ronda Rousey Become First Female UFC Fighter
Rousey -- a former U.S. Olympian -- has officially joined Dana White's MMA organization ... and automatically becomes the 135 lb women's champion.
We're told 25-year-old Ronda will defend her title in 2013 -- possible opponents include Sara McMann, Cris Cyborg and rival Miesha Tate.
Rousey has been fighting in Strikeforce since last year and emerged as a superstar ... beating the living crap out of just about everybody she's faced. In fact, she's undefeated.
And there's more ... sources say Strikeforce, which airs on Showtime, will be running its last event in January before folding up shop for good. more on this story
TMZ submitted this story.