MARS Jr. Derby is a dual affiliated  junior league. We follow both  the Junior Roller Derby Association (JRDA) & USA Roller Sports (USARS) jr. derby rules and skillsets. While both rule sets require many of the same technical skills, there are slight differences during game play. Our dual affiliation allows our skaters to be well rounded athletes and affords them the opportunity to compete at the local, regional, national and international level. 

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Learn more about JRDA and USARS Skills & Rules Below!