Todd S. Ellenbecker, DPT, MS, SCS, OCS, CSCS, is a physical therapist and clinic director for Physiotherapy Associates Scottsdale Sports Clinic in Scottsdale, Arizona, where he is also the national director of clinical research for Physiotherapy Associates. He is the vice president of medical services for the Association of Tennis Professionals (ATP) Tour and current member and past chairman of the United States Tennis Association (USTA) national sport science committee. He is also a certified United States Professional Tennis Association (USPTA) tennis teaching professional. He is a certified sports clinical specialist, orthopaedic clinical specialist, and strength and conditioning specialist. Ellenbecker, who has more than 30 years of experience in physical therapy, has authored many books and articles in research journals and trade publications and is an international presenter on shoulder and elbow rehabilitation. He has also served on editorial boards for several journals. Among many other honors, Ellenbecker was named the Sports Medicine Professional of the Year (2003) by the National Strength and Conditional Association and received the Ronald G. Peyton Lecture Award (2007) by the Sports Physical Therapy Section and the Samuel Hardy Educational Merit Award (2008) by the International Tennis Hall of Fame. Kevin E. Wilk, PT, DPT, FAPTA, is the associate clinical director for Champion Sports Medicine in Birmingham, Alabama, as well as vice president of clinical education for Physiotherapy Associates. He is also the director of rehabilitative research at the American Sports Medicine Institute in Birmingham while also serving as the rehabilitation consultant for Major League Baseball's Tampa Bay Devil Rays. Wilk, who has been a physical therapist, researcher, and educator for more than 30 years, has also published many books and articles and book chapters in various medical journals and industry publications. He is an adjunct assistant professor in the physical therapy program at Marquette University and has presented his work and research worldwide. Wilk received the Catherine Worthingham Fellowship in 2012 by the American Physical Therapy Association, the Turner A. Blackburn Hall of Fame Lifetime Achievement Award in 2012 by the Sports Physical Therapy Section (SPTS), the Ronald G. Peyton Lecture Award in 2004 by SPTS, and the James R. Andrews, MD, Award for Excellence in Baseball Sports Medicine in 1999 by the American Sports Medicine Institute.