California runner only second American woman to win in 17 years.
He had been sidelined due to a hip injury.
Check out these great photos of the women's 10,000m final on Thursday night.
It's a who's who of American female distance runners.
Amy Hastings led the way for the Americans.
He was the first non-Kenyan male to win in 20 years.
All the pre-race favorites dropped out except for one.
Four American women place in the top 20.
She's actually just treating it like a "workout".
Another dominating performance from the "blond assassin".