[2] MRDA member leagues play using the rules of Flat-Track Roller Derby originally designed by the WFTDA.

[3] The association has 55 active member leagues: Inactive Leagues: The MRDA-organized annual championships: The Men's Derby Coalition (the MRDA's former name) held its first Championship on 17 October 2010, with New York Shock Exchange defeating the Pioneer Valley Dirty Dozen in the final.

[28] New York Shock Exchange managed to defend their title with a narrow win over Puget Sound Outcast Derby.

[29] At the 2012 Championships, Your Mom Men's Derby beat St. Louis by a single point (136–135) in the final, despite having trailed for almost the entire bout.

The 2015 Championship was especially notable, as it was the first time a team from outside the USA participated (Southern Discomfort Roller Derby from London, England, UK).