Banked Track Roller Derby
Banked track roller derby a roller skating contact sport played on an oval banked track, 100' long by 60' wide. A 60-minute roller derby game, or bout, is a series of one-minute timed jams. Each team, typically with a roster of 15, fields five skaters during each jam: one jammer, designated with a star on their helmet, and four blockers. During each jam, players skate counterclockwise on a circuit track. The jammer scores a point for each opposing blocker they lap. The blockers simultaneously defend by hindering the opposing jammer, while also playing offense by maneuvering to aid their own jammer.