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New MRDA Branded Version of the Rules of Flat Track Roller Derby Now Available The Men’s Roller Derby Association in conjunction with the Women’s Flat Track Derby Association are proud to announce the newest version of “The Rules of Flat Track Roller Derby.” This is the 7 th revision/update since the shared rule set was first developed in 2005 by the WFTDA. The changes include routine revisions and updates to include publications and clarifications since the 2013 publication of the rule set. They also reflect a handful of more significant changes to the game, which were beta tested by the roller derby community, reviewed and developed by the WFTDA Rules Committee, and with feedback from WFTDA and MRDA member leagues: Teams may begin playing under the new rules immediately. All sanctioned bouts must be played under the revised rule set starting April 1, 2014. To view and read and download the new rule set go to  http://www.linkyy.com/MRDA_02014_ruleset . The WFTDA version of the rules can be found at  http://www.wftda.com/rules/20140301 .