In the 20's, the term roller derby was used to describe rolling skating endurance races. Shortly thereafter, a sports reporter, noting that the crowds thoroughly enjoyed the inadvertent collisions, urged promoter Leo Stelzer to modify the rules to promote physical contact. Stelzer trademarked the roller derby name and settled on a set of rules. Classic derby was born. Click here to learn more about the rise and fall of classic derby, and the various attempts at revival.
The modern revival features contemporary grassroots leagues built in a DIY manner by the women who skate in them. In a departure from previous incarnations, leagues feature amateur female skaters skating on (predominately) flat tracks. Unlike the scripted action of classic derby, modern roller derby emphasizes athleticism and competition instead of plots and choreography. To learn more about the derby revival, click here.