MIAMI -- The NFL Players Association has told the NFL it wants to initiate a review of the league's concussion protocols following Miami Dolphins quarterback Tua Tagovailoa's return to Sunday's game against the Buffalo Bills, a league source told ESPN's Adam Schefter.
Tagovailoa left the game after hitting the ground hard late in the first half, and the team announced at halftime that he was questionable to return with a head injury. He completed an 8-yard pass to Jaylen Waddle after scrambling out of the pocket, and Bills linebacker Matt Milano pushed him after the throw.