Kayla Harrison, a two-time Olympic gold medalist in judo for Team USA, makes her mixed martial arts debut at PFL 2 in Chicago on June 21, 2018. During the first PFL event at Madison Square Garden on June 7, Harrison spoke about why she made the move to MMA, her training and the inevitable comparisons to Ronda Rousey. (File footage provided by PFL and UFC; photos by Getty Images) Credit: Newsday / Mark La Monica

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