Following review of the handling of Tua Tagovailoa's injury, NFL, NFLPA agree 'the outcome in this case is not what was intended' - ESPN
Tua Tagovailoa and NFL concussion protocol: Many questions need to be answered - Sports Illustrated
Dolphins QB Tua Tagovailoa not in concussion protocol
NFL-NFLPA joint statement on investigation into handling of Dolphins QB Tua Tagovailoa's concussion protocol
Miami Dolphins QB Tua Tagovailoa in concussion protocol, no timetable for return - ESPN
NFL to investigate Miami Dolphins star Tua Tagovailoa's latest concussion
Miami Dolphins QB Tua Tagovailoa Injury Investigation Competed - Sports Illustrated Miami Dolphins News, Analysis and More
Dolphins QB Tagovailoa to Miss Pro Bowl, Still in Concussion Protocol: AP Source – NBC 6 South Florida
NFL concussion protocols under scrutiny
Consultant involved in Dolphins QB Tua Tagovailoa's concussion check fired by NFLPA – KIRO 7 News Seattle