The National Football League Players Association has agreed to changes to the concussion protocol and is urging the league to do the same before the games start.

A review of how the concussion evaluation of Miami Dolphins quarterback Tua Tagovailoa was handled was announced.

"Our union has agreed to change the concussion protocols to protect players from returning to play in the case of any similar incident to what we saw on September 25," the board and executive committee said. We would like the changes to go into effect before this weekend's games to make sure the players are protected.

After hitting the back of his head on the ground, Tagovailoa stumbled while trying to return to the huddle. The team said he was taken to the locker room with a head injury.

He passed the locker room evaluation, however, and returned to the game after halftime, with both Tagovailoa and the Dolphins clarifying that his stumbles were caused by a back injury.

Tagovailoa was taken to the hospital after his head hit the turf in a game. He will not play against the Minnesota Vikings on Sunday due to a concussion.

Following Tagovailoa's quick return to the game, the NFLPA initiated its right to request a review of the league's concussion protocol and terminated the consultant who initially evaluated the quarterback.

The concussion protocol will be changed based on what both parties learned during the review, according to the league and the union.

The report was contributed to by an athlete.