Sports What is the NFL’s concussion protocol? Tua Tagovailoa injury puts policy in spotlight October 1, 2022 Scooby Axson, USA TODAY Comments Off on What is the NFL’s concussion protocol? Tua Tagovailoa injury puts policy in spotlight Dolphins' Tua Tagovailoa was stretchered off the field in Cincinnati. Here are the NFL concussion protocol's phases for a player to return to action.