Alika Jenner/ASSOCIATED PRESS
The NFL Head, Neck and Spine Committee—a board of independent and NFL-affiliated physicians and scientists, including advisors for the NFL Players Association—developed the NFL Game Day Concussion Diagnosis and Management Protocol in 2011. The Concussion Protocol is reviewed each year to ensure players are receiving care that reflects the most up-to-date medical consensus on the identification, diagnosis, and treatment of concussions.