NFL faces intense scrutiny over concussion protocols
What is the NFL's concussion protocol and WHY was Miami's Tua Tagovailoa playing in Cincinnati
Rugby, concussions and duty of care: why the game is facing scrutiny
NFL claims concussion protocols didn't fail Tua Tagovailoa on Sunday. That's hard to believe after Thursday's scary head injury
We Can Make Football Safer - Scientific American
From Tua Tagovailoa to Jack Eichel: How much control should a team have over an athlete's body? - The Athletic
Panthers say Cam Newton hurt his eye, not his head, during controversial incident
Concussion Protocol & Return-to-Participation Protocol: Overview
NFL and pain: Fleeting glory, bodies past repair