The team formed last year but its first official roller derby “bout” doesn’t take place until this Sunday at the Salem Civic Center … that’s when the hometown Rail City Rollers will battle the Morgantown Roller Vixens … Sunday’s bout at the Salem Civic Center begins at 6-pm … Karen Blanchard – she prefers Sabatha Rage – says roller derby teams score points when “jammers” circle the track and get past the other squad’s “blockers” she spoke with WFIR’s Gene Marrano: