There is no question that players striving for more power, more control, or more variety in stroke production through trial and error are the primary determinants in changes to stroke mechanics. However, I have shown that biomechanics certainly plays a role in the process of change. General theory provides a base on which modifications can be made, and an understanding of individual stroke mechanics inevitably leads to improved performance. Science also enables players to modify their training regimens with minimal risk of injury. I have no doubt that the other sports science disciplines (psychology, exercise physiology, and pedagogy/motor learning) could also make a case for their role in player development