WFTDA - Women's Flat Track Derby Association This is the default ruleset all others are currently based on. MRDA - Men's Roller Derby Association WFTDA Rules, but with gender-neutral pronouns :-) JRDA - Junior Roller Derby Association JRDA play is grouped into 3 categories by skill level. Level 0 - Fresh Meat - Not Bouting (No Rules) Level 1 - No Contact - Positional Blocking only Level 2 [GDocs] - Light Contact - Pushing, but no hitting Level 3 [PDF] - WFTDA Contact, minor changes for juniors JRDA vs. WFTDA Rules Matrix - A table listing the major differences between WFTDA rules and the JRDA rules at each level. Hosted by Minor Threat Junior Roller Derby; compiled by Sirius Hertz and Auntithesis. | Zebra Huddle - Roller Derby Officials' Forum Got questions? Zebra Huddle has answers! USARS - USA Roller Sports The USA's Olympic Governing Body for all roller sports, including roller derby RDCL - Roller Derby Collation of Leagues Banked-Track Roller Derby governing body |