Photo Gallery: Ronda Rousey | UFC 30th Anniversary

UFC women's bantamweight champion Ronda Rousey of the United States celebrates after defeating Bethe Correia of Brazil by KO during the UFC 190 event inside HSBC Arena on August 1, 2015 in Rio de Janeiro, Brazil. (Photo by Mike Roach/Zuffa LLC)

Amanda Nunes of Brazil and Ronda Rousey touch gloves in their UFC women's bantamweight championship bout during the UFC 207 event at T-Mobile Arena on December 30, 2016 in Las Vegas, Nevada. (Photo by Jeff Bottari/Zuffa LLC)

Ronda Rousey of the United States (L) and Holly Holm of the United States compete in their UFC women's bantamweight championship bout during the UFC 193 event at Etihad Stadium on November 15, 2015 in Melbourne, Australia. (Photo by Pat Scala /Zuffa LLC)

Former UFC bantamweight champion Ronda Rousey speaks after being inducted into the UFC Hall of Fame during the UFC Hall of Fame Class of 2018 Induction Ceremony inside The Pearl concert theater at Palms Casino Resort on July 5, 2018 in Las Vegas, Nevada. (Photo by Jeff Bottari/Zuffa LLC)

UFC women's bantamweight champion Ronda Rousey (top) punches Alexis Davis while controlling her body in their UFC women's bantamweight championship fight at UFC 175 inside the Mandalay Bay Events Center on July 5, 2014 in Las Vegas, Nevada. (Photo by Josh Hedges/Zuffa Getty Images)

Ronda Rousey celebrates her UFC Bantamweight Title over Liz Carmouche with a member of her team during UFC 157 at Honda Center on February 23, 2013 in Anaheim, California. (Photo by Jeff Gross/Getty Images)

Ronda Rousey (top) punches Miesha Tate in their UFC women's bantamweight championship bout during the UFC 168 event at the MGM Grand Garden Arena on December 28, 2013 in Las Vegas, Nevada. (Photo by Josh Hedges/Zuffa LLC/Zuffa LLC via Getty Images)

Ronda Rousey reacts to her victory over Sara McMann in their women's bantamweight championship bout during UFC 170 inside the Mandalay Bay Events Center on February 22, 2014 in Las Vegas, Nevada. (Photo by Josh Hedges/Zuffa LLC/Zuffa LLC via Getty Images)

Ronda Rousey consoles Cat Zingano after Rousey defeated her by armbar submission in their UFC women's bantamweight championship bout during the UFC 184 event at the Staples Center on February 28, 2015 in Los Angeles, California. (Photo by Jeff Bottari/Zuffa LLC/Zuffa LLC via Getty Images)