NFL under fire over its concussion protocol following Tua Tagovailoa's back-to-back game hits - ABC News
NFL's handling of concussions questioned after Tua's injury, Sports
Doctor Who Examined Dolphins' Tua Tagovailoa Is Dismissed - The New York Times
Tua Tagovailoa Archives – Five Reasons Sports Network
NFLPA president on handling of Tagovailoa's injury: 'We are all outraged'
NFL claims concussion protocols didn't fail Tua Tagovailoa on Sunday. That's hard to believe after Thursday's scary head injury