NFL faces intense scrutiny over concussion protocols
Miami Dolphins' Tua Tagovailoa placed in concussion protocol once
Majority of Americans Support Changing the NFL Concussion Protocol
Tua Tagovailoa officially out with concussion at New England
Tua Tagovailoa's trainer insists the Dolphins QB will be in Miami
Tua Tagovailoa's injury status after Dolphins clinch AFC playoff spot
Dolphins' Tagovailoa considered retirement after concussions
Dolphins' Tua Tagovailoa in concussion protocol, says he's
Tua Tagovailoa injury shows NFL must improve its handling of brain