Founded in 2004 by the Donnelly sisters, the Minnesota RollerGirls league is run by a pack of strong, scrappy women who work by day as everything from web developers to fashion designers to medical professionals. By night, they’re checking, elbowing and brawling in the full-contact sport that is roller derby. Get riled up with the crowd at the home-team championship at Roy Wilkins Auditorium. $13–$18. 7:30 p.m., doors at 6:30 p.m. Roy Wilkins Auditorium, 175 W. Kellogg Blvd.; 651.265.4800; theroy.org.