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          Olympics 2021 athletes Simone Biles, John John Florence and Mariah Duran on their skills

          Surfer John John Florence and skateboarder Mariah Duran -- and their sports -- will make their Olympic debuts in Tokyo, while four-time Olympic gold medalist Simone Biles is expected to win five more golds. Dylan Coulter, Jeremiah Arias, Parallel Sea
          • Alyssa RoenigkJul 20, 2021, 07:15 AM ET
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              Alyssa Roenigk is a senior writer for ESPN whose assignments have taken her to six continents and caused her to commit countless acts of recklessness. (Follow @alyroe on Twitter).
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          In Tokyo, four-time Olympic gold medalist Simone Biles could become the first woman to land a Yurchenko double pike vault in Olympic competition. Two-time World Surf League champion John John Florence and two-time X Games gold medalist Mariah Duran will lead their sports into the Olympic era as surfing and skateboarding make their five-ring debuts. Ever wonder how these athletes make the toughest skills look easy? We've got you covered here.

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