![Junior skaters from the Arizona Derby Dames and the LA Derby Dolls compete at the National Championship for Banked Track Roller Derby in Los Angeles, California, June 7, 2013. Roller derby is Junior skaters from the Arizona Derby Dames and the LA Derby Dolls compete at the National Championship for Banked Track Roller Derby in Los Angeles, California, June 7, 2013. Roller derby is](https://c8.alamy.com/compfr/2d0mm3d/junior-skaters-from-the-arizona-derby-dames-and-the-la-derby-dolls-compete-at-the-national-championship-for-banked-track-roller-derby-in-los-angeles-california-june-7-2013-roller-derby-is-a-real-full-contact-sport-played-at-fast-pace-by-all-volunteer-teams-on-a-banked-oval-track-and-was-created-in-1935-by-leo-seltzer-in-chicago-juniors-are-aged-7-16-and-play-on-teams-of-ability-not-age-and-have-feisty-skater-names-such-as-lil-bruiser-ripper-n-half-and-felony-melanie-picture-taken-june-7-2013-reuters-lucy-nicholson-united-states-tags-society-sport-2d0mm3d.jpg)
Junior skaters from the Arizona Derby Dames and the LA Derby Dolls compete at the National Championship for Banked Track Roller Derby in Los Angeles, California, June 7, 2013. Roller derby is
![Nov. 14, 2010 - Los Angeles, California, USA - The Junior Derby Dolls are introduced during halftime of the Baby Doll Brawl between the Karma Chameleons and the Church of the Poison Nov. 14, 2010 - Los Angeles, California, USA - The Junior Derby Dolls are introduced during halftime of the Baby Doll Brawl between the Karma Chameleons and the Church of the Poison](https://c8.alamy.com/comp/DJXXMJ/nov-14-2010-los-angeles-california-usa-the-junior-derby-dolls-are-DJXXMJ.jpg)
Nov. 14, 2010 - Los Angeles, California, USA - The Junior Derby Dolls are introduced during halftime of the Baby Doll Brawl between the Karma Chameleons and the Church of the Poison
![Skaters from the Junior LA Derby Dolls take a timeout at the National Championship for Banked Track Roller Derby in Los Angeles, California, June 7, 2013. Roller derby is a real, full-contact Skaters from the Junior LA Derby Dolls take a timeout at the National Championship for Banked Track Roller Derby in Los Angeles, California, June 7, 2013. Roller derby is a real, full-contact](https://c8.alamy.com/compfr/2cxn6g9/skaters-from-the-junior-la-derby-dolls-take-a-timeout-at-the-national-championship-for-banked-track-roller-derby-in-los-angeles-california-june-7-2013-roller-derby-is-a-real-full-contact-sport-played-at-fast-pace-by-all-volunteer-teams-on-a-banked-oval-track-and-was-created-in-1935-by-leo-seltzer-in-chicago-juniors-are-aged-7-16-and-play-on-teams-of-ability-not-age-and-have-feisty-skater-names-such-as-lil-bruiser-ripper-n-half-and-felony-melanie-picture-taken-june-7-2013-reuters-lucy-nicholson-united-states-tags-society-sport-2cxn6g9.jpg)