NFL under fire over its concussion protocol following Tua Tagovailoa's back-to-back game hits - ABC News
The NFL's concussion protocol is a long-running controversy that does little to protect players' health - The Messenger
NFL's handling of concussions questioned after Tua's injury
The Holly Spirit Dolphins' Tua Tagovailoa's devastating head injury—and what it means for NFL concussion protocol
Tua Tagovailoa Reportedly Clears Concussion Protocol for Second Time
With injury, Justin Fields is taking a big risk for Ohio State – The Virginian-Pilot
WAMC Sports Report: Chargers reach playoffs, beat Colts 20-3
Why is Weigman being put back in the game after a massive shot to the head flying under the radar? : r/CFB
Tua Tagovailoa Is in the NFL's Concussion Protocols Again - WSJ