The 2016 Charm City Roller Girls All Stars take on Ontario’s Tri-City Thunder on July 9 in an international showdown! See some of the top roller derby athletes in North America unleash aitche-ee-double-hockey-sticks upon each other. Good thing our neighbors to the north have free health care. They’ll need it. But wait, there’s more! In this double-header Charm’s Female Trouble will take on our frenemies to the south—NOVA Roller Derby’s SuperNOVAs.