The NFL and players union agreed  updated concussion protocol

The NFL and NFL Players Association agreed to modify the league's concussion protocol

The NFL and players union agreed  updated concussion protocol

 investigation into the league's procedures after Miami Dolphins quarterback

Tua Tagovailoa suffered an injury against the Buffalo Bills last month.

The league and players' union said in a joint statement Saturday that the outcome of the Tagovailoa case

 when the Protocol was drafted." As a result, language addressing

 protocol list of symptoms that would keep a player from returning to action.

In the first half of the Sept. 25 game against Buffalo

Tagovailoa took a hit from Bills linebacker Matt Milano, which caused him to slam to the ground.

 He appeared disoriented afterward and stumbled as he tried to get to his feet.