Watch Demon of the Derby: The Ann Calvello Story

A Feature-length documentary film. Body slamming, elbow-jabbing, hair-pulling Ann Calvello has been Roller Derby's "Meanest Mama on Skates" since 1948. Now in her 70's, Ann is still rolling around the banked track, bashing heads with the best of them. From her heyday in Madison Square Garden to her more recent matches in high school gymnasiums, this documentary portrait covers six decades of an ageless rebel's pursuit of fame, glory, and the ultimate jam.

Demon of the Derby: The Ann Calvello Story is a drama with a runtime of 53 minutes.