INSIDER
Video: Teen phenom Athing Mu wins 800m gold, breaks American record
Read full article: Video: Teen phenom Athing Mu wins 800m gold, breaks American recordTeenager Athing Mu won 800m gold at the Tokyo Olympics, breaking Ajee Wilson's American record in 1:55.21 to give the U.S. its first Games title in the event in 53 years.