 Rat City is a founding member of the Women's Flat Track Derby Association (WFTDA), and has achieved success on the WFTDA stage, qualifying for WFTDA Playoffs every season, including a second-place finish in the 2007 WFTDA Championships.The league was founded as Rat City Rollergirls in 2004 by "Dixie Dragstrip", Lilly "Hurricane Lilly" Warner and Rahel "Rae's Hell" Cook.Nearly 2000 fans attended the first league home team championship in October 2005 at a former navy hangar in Magnuson Park, as the Derby Liberation Front defeated the Throttle Rockets 52-32.