Sha’Carri Richardson stamps a comeback with a 100-meter world title

Sha'Carri Richardson stamps a comeback with a 100-meter world title

Two years after missing the Olympics for testing positive for marijuana, the American sprinter became the fastest woman in the world.

(Image credit: Denes Erdos/AP)

​Two years after missing the Olympics for testing positive for marijuana, the American sprinter became the fastest woman in the world.