From Olympic silver to world gold.

With the world's eyes locked on Jamaica's world leader Danielle Williams and the United States' world record-holder Keni Harrison, Nia Ali powered through the second half of the 100m hurdles final to win the world title and become the ninth-fastest woman of all time in 12.34—a mark that significantly improved upon the 12.44 PR she set earlier in the semifinal.

Harrison, who hasn't earned an Olympic berth or a world medal despite becoming the fastest woman in history in 2016 with a 12.20, finally added a world silver medal to her resume in 12.46 today by taking down Williams, who led the world in 2019 with a 12.32.

Ali gave birth to her second child last year.

"Having babies makes us stronger," Ali said. "There’s nothing weak about having a baby, so what makes any one person think we won’t ‘make it through it’ and succeed?"

Things we love to see? THIS. @ItsPooda and @Ken_AYE_ go 1-2 in the 100m hurdles ?@usatf x #WorldAthleticsChamps pic.twitter.com/1k6tduIr7h

— Team USA (@TeamUSA) October 6, 2019