Ronda Rousey once weighed in on whether she would ever fight the first-ever openly transgender fighter, Fallon Fox, if presented with the opportunity.
Fox made history when she became the first MMA fighter to come out as transgender in March 2013 and compete in a professional bout.
Fallon Fox drew flak from some fans, fighters, and media, who questioned the legitimacy of male-to-female transgender fighters competing in women's MMA.
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In an interview with the New York Post in April 2013, former UFC women's bantamweight champion Rousey was asked about the possibility of Fox fighting in the UFC someday and her thoughts on facing the transgender fighter in the cage.
While Ronda Rousey claimed she'd accept the fight if the top brass asked her, she stated she wouldn't be comfortable facing Fox in the women's division. She said:
"She can try hormones, chop her p**ker off, but it's still the same bone structure a man has. It's an advantage. I don't think it's fair."
Joe Rogan on transgender MMA fighter Fallon Fox fighting against cisgender women
The idea of transgender women competing against cisgender women in sports has been a hotly debated topic among fans, especially in combat sports. Joe Rogan once weighed in on the issue of Fallon Fox competing against cisgender women in professional mixed martial arts.
In a July 2018 episode of the Joe Rogan Experience (#1147), the UFC commentator spoke to neuroscientist Dr. Debra Soh about the emergence of Fox in the MMA scene.
He expressed his concerns regarding the transgender fighter's bone density remaining unaffected by sex reassignment surgery. Referring to Fallon Fox, Rogan stated:
"She calls herself a woman, but I tend to disagree... And she wants to be able to fight women in MMA. I say no f***ing way. I say if you had a di*k at one point in time, you also have all the bone structure that comes with having a d*ck. You have bigger hands, you have bigger shoulder joints."
Watch a clip from the episode below:
While the debate around transgender women fighting cisgender women in combat sports is centered around the argument that transgender fighters have more power and strength than their opponents, experts disagree.
In a March 2013 interview with Bloody Elbow, leading gender reassignment surgeon Dr. Marci Bowers stated that hormone treatment ensures transgender athletes have almost similar anatomical structures to their cisgender counterparts:
"Most measures of physical strength minimize, muscle mass decreases, bone density decreases... After as much time as has passed in her case, if tested, she would probably end up in the same muscle mass category as her biologically born female counterpart,"