Claressa Shields is 9-0 as a professional boxer. She previously said: "They are calling her the greatest MMA fighter of all-time, not the greatest fighter. I'm the GWOAT, the greatest woman fighter of all-time. She ain't been to the Olympics two times. I've been to the top of the world two times. And I'm not putting myself against Amanda because we're both woman athletes. Actually I praise her like I praise Cris (Cyborg)," "She's the greatest women's fighter in MMA and I'm the greatest women's fighter in boxing. And if we were to fight, I would win. That's what I think. [In MMA I wouldn't win], I can't wrestle. But in boxing, yeah [I would win], Amanda Nunes would go to sleep."