2018 T-bone Memorial Team Derby presented by Colyer Performance Engines, on DerbyNation.tv and Derbytees.tv powered by DEC Headers. Lunatic Promotions presents a full line up including both teams and individual classes, you won’t want to miss this! Comin’ at you live from the Southern Iowa Speedway in Oskaloosa, IA, Scott’s Derby Tires Pre-Race Show starts a half hour before the scheduled derby start time. For more information visit Lunatic promotions on their Facebook page.