Glenn Fleisig, Ph.D, has been the Research Director of the American Sports Medicine Institute since its foundation in 1987. Dr. Fleisig is a renowned expert in sports biomechanics, especially involving baseball. He is also an adjunct professor at UAB and a consultant for numerous organizations, including Little League Baseball and USA Baseball. Young-Hoo Kwon, Ph.D., is a Professor of Kinesiology and Director of the Biomechanics Laboratory at Texas Woman’s University. Dr. Kwon is an expert in sports biomechanics and motion analysis-based research. He is the Editor-in-chief of journal Sports Biomechanics.