1. School of Kinesiology, University of Michigan, Ann Arbor, Michigan, USA
2. Game Insight Group, Tennis Australia, Melbourne, Australia
3. Institute of Sport, Exercise and Active Living, Victoria University, Melbourne, Australia
4. Department of Neurology, School of Medicine, Oregon Health and Science University, Portland, Oregon, USA
5. Department of Kinesiology, University of Connecticut, Storrs, Connecticut, USA
6. Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
7. Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA