Miami Dolphins’ Tua Tagovailoa exits loss to Bills with third NFL concussion

• Miami quarterback leaves game after hitting head on turf
• Tagovailoa ruled out and diagnosed with concussion
• Bills dominate Dolphins 31-10 behind Cook's three TDs

Miami Dolphins quarterback Tua Tagovailoa sustained a concussion for the third time in his NFL career, leaving his team's game Thursday night against Buffalo after running into defensive back Damar Hamlin and hitting the back of his head against the turf.

Tagovailoa remained down for about two minutes before getting to his feet and walking to the sideline after the play in the third quarter. He made his way to the tunnel not long afterward, looking into the stands before smiling and departing toward the locker room.