Tua Tagovailoa: NFLPA fires consultant who evaluated him during the Bills game : NPR
NFL's handling of concussions questioned after Tua's injury
NFL, Players Union Agree to Change Concussion Protocol - The New York Times
N.F.L.'s Concussion Protocol Under Scrutiny After Tagovailoa Injuries - The New York Times
Explaining the NFL's latest concussion controversy and policy change : NPR
Explaining the NFL's latest concussion controversy and policy change
Quarterback Injury Raises Questions About NFL Concussion Protocols
Source - NFLPA wants review of concussion protocols after Miami Dolphins QB Tua Tagovailoa's quick return to game - ESPN
Majority of Americans Support Changing the NFL Concussion Protocol