[2] 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.

[3] The Rat City Rollergirls hosted the 2006 Roller Derby "Bumberbout" Flat Track Invitational on Saturday, September 2, 2006, in the KeyArena at Seattle Center.

Within the Rat City Rollergirl league, the Sockit Wenches won the season championship at Sand Point on October 21, 2006.

They beat the formerly undefeated Derby Liberation Front, scoring the decisive points in the final seconds of the match, and of the season.

In February 2008 Rat City first hosted the Rust Riot Pacific Northwest Tournament, predominantly featuring B-teams from Washington, Oregon and Idaho.

Ticket sales for the first bout of the season vastly exceeded expectations of KeyArena management, filling more than 4,000 of the 5,500 seat capacity in what is referred to as the 'lower bowl'.

[10] As a business enterprise, the league is registered as a non-profit corporation, Rat City Roller Derby,[11] which is owned by the skaters.

[15] The Seattle Derby Brats were founded and coached by Krista Lafontaine Williams ("Betty Ford Galaxy") formerly of Rat City and currently skating with the Rainier Roller Girls.

Composed of skaters in training, as well as recreational derby players who do not wish to commit at the level of league play, PFM alumnae go on to league play with the Rat City Rollergirls, the Rainier Roller Girls, the Dockyard Derby Dames, the Jet City Rollergirls, and the Tilted Thunder Rail Birds.

[17] The 2007 documentary, Blood On The Flat Track: The Rise of the Rat City Rollergirls,[18] was directed by Lainy Bagwell and Lacey Leavitt.

[22] In 2008, the Rat City Rollergirls were a featured league in a video game developed by Frozen Codebase and the Women's Flat Track Derby Association.