Emerald City Roller Derby
Emerald City Roller Derby (ECRD), formerly known as Emerald City Roller Girls, is a roller derby league based in Eugene, Oregon.  Founded in 2007, the league once consisted of three teams and a mixed team which competed against teams from other leagues. 

ECRD was founded in January 2007 by a group of people who met through a knitting circle, and a posting on Craigslist.  By January 2010, the league had around 80 skaters.

Emerald City Junior Derby, formerly the Junior Gems, junior roller derby league is an offshoot of ECRD.

References

Sports in Eugene, Oregon
Roller derby leagues established in 2007
Roller derby leagues in Oregon
2007 establishments in Oregon