IE 11 is not supported. For an optimal experience visit our site on another browser.

Sha’Carri Richardson vows ‘I’m not done’ after disappointing race

02:07

U.S. sprinter Sha’Carri Richardson returned to the track over the weekend for the first time since a failed drug test led to her missing the Olympics. But the results were not what she had been hoping for. NBC’s Stephanie Gosk reports for TODAY.