If you’ve never heard of roller derby, get ready to learn about your new favorite sport. New York City’s league Gotham Girls Roller Derby includes four teams: Bronx Gridlock, Manhattan Mayhem, Queens of Pain and Brooklyn Bombshells. During a derby bout, these women skate in circles around a track, pushing and shoving to get their point-scoring player (the Jammer) ahead of the opposing team. On the sidelines, the Jeerleaders lead the crowd in cheers for their team and perform at halftime. Fans and newcomers pack the stands and shout and wave signs for their favorite players. The season starts in April and continues into the fall, with bouts held around the city. Find upcoming events, rules of the sport and more at gothamgirlsrollerderby.com.