Busta Twist will be tested at two turns for the first time Saturday at Arapahoe Park, and he gets pedigree support for the 1 1/16-mile distance of the $35,000 Colorado Thoroughbred Breeders Association Derby. Busta Twist also is in sharp form, and as a result, he should start as a strong favorite in the five-horse field restricted to 3-year-olds bred in Colorado.