CBS Sports Clark Kent, a 10-year-old boy, recently beat an old record set by Olympic swimmer Michael Phelps. Dubbed "Superman," Kent swam a 100-meter butterfly race at a competition in California over one second faster than what Phelps managed 23 years ago. When Clark Kent, a 10-year-old boy dubbed "Superman," is in the water, he says he feels like he is "flying," according to CBS Evening News .