San Diego Derby United on Instagram: “📣THIS WEEKEND📣 Join us for full contact, in-person, banked track ROLLER DERBY! Arizona takes on San Diego. Saturday August 13th Gates…”
![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
![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/comp/2CXN6GE/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-reuterslucy-nicholson-united-states-tags-society-sport-2CXN6GE.jpg)