Overview The holding consists of a number of articles by Dr. Carroll, as well as lecture notes and transparencies used in his lectures. In addition, Dr. Carroll’s testimony as an expert witness and member of the Nation Collegiate Athletic Association (NCAA) Scientific Research Panel studying exit velocities of various types of baseball bats when striking a pitched ball is included, as are the reports of other expert witnesses in the case of Baum Research and Development Co. Inc. vs. Hiller & Bradsby...