![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/2cyxwyj/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-2cyxwyj.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
![A skater called "Lil Bruiser" from the Junior Arizona Derby Dolls waits to compete at the National Championship for Banked Track Roller Derby in Los Angeles, California, June 7, 2013. Roller derby A skater called "Lil Bruiser" from the Junior Arizona Derby Dolls waits to compete at the National Championship for Banked Track Roller Derby in Los Angeles, California, June 7, 2013. Roller derby](https://c8.alamy.com/compfr/2cxe0t7/a-skater-called-lil-bruiser-from-the-junior-arizona-derby-dolls-waits-to-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-sport-society-2cxe0t7.jpg)
A skater called "Lil Bruiser" from the Junior Arizona Derby Dolls waits to compete at the National Championship for Banked Track Roller Derby in Los Angeles, California, June 7, 2013. Roller derby
![Basket - Basket. NM3 : un derby à enjeux différents pour le Brest MB et l'Ujap Quimper B - Le Télégramme Basket - Basket. NM3 : un derby à enjeux différents pour le Brest MB et l'Ujap Quimper B - Le Télégramme](https://www.letelegramme.fr/images/2022/02/05/soir-de-derby-pour-nicolas-carre-a-gauche-et-les-brestois_6164776_676x459p.jpg)