120929 Marietta: Marietta Derby Darlins’ Jessie Hill (left) tries to stay on the track as she collides with Torpedo Bay Rollergirls’ Christina Sykes during the Bombshell Brawl at the Cobb County Civic Center in Marietta on Saturday, September 29, 2012. Founded in 2011, the Marietta Derby Darlins are one of numerous roller derby organizations around the metro Atlanta area. Jonathan Phillips Special