Video: Teen phenom Athing Mu wins 800m gold, breaks American record

TOKYO, JAPAN - AUGUST 03:  Gold medalist Athing Mu of Team United States and bronze medalist Raevyn Rogers of Team United States celebrate after the Women's 800m Final on day eleven of the Tokyo 2020 Olympic Games at Olympic Stadium on August 03, 2021 in Tokyo, Japan. (Photo by Christian Petersen/Getty Images)
TOKYO, JAPAN - AUGUST 03: Gold medalist Athing Mu of Team United States and bronze medalist Raevyn Rogers of Team United States celebrate after the Women's 800m Final on day eleven of the Tokyo 2020 Olympic Games at Olympic Stadium on August 03, 2021 in Tokyo, Japan. (Photo by Christian Petersen/Getty Images)

Teenager 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.