Tracy Williams ("Justice Feelgood Marshall") has been involved in roller derby since 2005 as a referee, player, announcer and writer. In 2007 he founded DerbyNewsNetwork.com, which eventually grew into the premiere online source for derby recaps, previews and live streaming video; he also founded one of the first modern men's teams in Baltimore's Harm City Homicide and helped launch the Men's Roller Derby Association.

Currently he lives in Chicago, Illinois and serves as a bench coach for the Windy City Rollers while remaining the editor-in-chief of DNN.