Royce Gracie Quotes
McGregor is taking Muhammad Ali's model. He can say whatever he wants but he's got to prove it. If he doesn't prove it, his career is going to be short.
Citations
Raimondi, Marc. "Royce Gracie: Conor McGregor taking Muhammad Ali's model, but must prove it." MMA Fighting, Vox Media, 15 Mar. 2016.
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Royce Gracie is a Brazilian semi-retired professional mixed martial artist, a UFC Hall of Famer, and a Gracie Jiu-Jitsu practitioner. A member of the Gracie family, he is considered to be one of the most influential figures in the history of mixed martial arts (MMA).