Sport-related concussions have recently been at the forefront of mainstream media, where the attention is now turning to the safety of our young athletes. With the recent rise of concussion lawsuits, coaches need to know concussion basics to protect their athletes and themselves. What we know about concussions has evolved, and it is critical that coaches understand these changes and how they impact the management of their teams’ injuries. In the absence of medical personnel, coaches are responsible for removing athletes from play if they have potentially sustained a concussion. Coaches must therefore understand the different mechanisms of injury, signs and symptoms, and the protocol to follow if they believe their athlete has sustained a concussion.