Roller Derby
My favourite hobby
Roller derby is a roller skating contact sport played on an oval track
by two teams of five skaters. It is played by approximately 1,250
amateur leagues worldwide.
A 60-minute roller derby game, or bout, is a series of two-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.
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. Because
roller derby uses a penalty box, power jams, in which one team has a
temporary numerical advantage after a foul, can have a major effect on
scoring.