What is the Evidence? explores the evidence for and against a variety of key topics in sports medicine, particularly concerning return-to-play aspects. For example, the video discusses a variety of case studies involving the issue of clinical neurogenic (as opposed to vascular) thoracic outlet syndrome. The video also looks at several of the basic consideration when making return-to-play decisions. In addition, the video reviews the issue of UCL injuries in adolescent throwing athletes, including the best treatment options. The next presentation addresses three important matters—infectious mononucleosis, ACL tears, and post-concussion syndrome. The final session focuses on the topic of ketorolac use (pain reliever) in sports—should it be utilized?, in what form? And, does it work?