What is a "jam" in roller derby?

In roller derby, a "jam" refers to a two-minute period during which skaters can score points. This is a critical aspect of the game, as it is during the jam that the designated scoring player, known as the "jammer," attempts to lap opposing players to accumulate points. The structure of the jam allows for high-energy play where strategy and teamwork come into play, as blockers work to both protect their jammer and hinder the opposing team's jammer.

The duration of two minutes provides a consistent timeframe for gameplay, making jamming a dynamic and exciting part of roller derby. Understanding this aspect of the game helps players and spectators alike appreciate the fast-paced nature of roller derby and the importance of effective teamwork and timing during these periods.