The roller derby championship hits the Mid-South Saturday and Sunday, with the Memphis Hustlin’ Rollers (great name), the Nashville All-Stars (terrible name, terrible city), and the Hard Knox All-Stars (please, bo-ring) competing in three bouts. The tournament is held Saturday, with mini-bouts and scrimmages beginning at noon on Sunday. Admission is $20 for a two-day pass. Kids ages 4 and under are free.