#2 She was the first woman to fight in the UFC
Today, the women's division is an integral part of the Ultimate Fighting Championship (UFC), and has four separate weight classes of its own. But once upon a time women fighting in the UFC was seen as an impossibility.
In fact, when a reporter had asked UFC President, Dana White when the fans could expect to see women in the Octagon, his answer was an emphatic 'never'.
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It was Ronda Rousey who changed the stance of the company regarding women. As a matter of fact, she was the first female fighter to sign with the UFC. She was also announced as the first ever UFC Women's Bantamweight Champion before ever entering the Octagon.
She would go on to defend her belt for the first time in February 2013 against Liz Carmouche, and win with her signature Armbar inside the very first round. Since then she has gone on to earn legendary status inside the Octagon, and is already a member of the UFC Hall of Fame.