MIAMI GARDENS, Fla. — Buffalo fans cheered so loudly in Hard Rock Stadium that Bills coach Sean McDermott was asked if it was a home game.
It wasn't. But Buffalo certainly gave fans who made the trip to South Florida plenty to celebrate Thursday night.
James Cook caught a touchdown pass and ran for two scores and the Bills routed Miami 31-10, with Dolphins quarterback Tua Tagovailoa leaving early because of a concussion.
Tagovailoa left in the third quarter after colliding with defensive back Damar Hamlin and hitting the back of his head against the turf. Tagovailoa was quickly ruled out with the concussion, casting doubt on his season after a history of dealing with head injuries.
''Very sad. It's the worst part of the game," Bills quarterback Josh Allen said. ''Nothing but love and prayers to him and his family, and hopefully everyone is sending those because he's going to need them.''
Coach Mike McDaniel did not specify if the Dolphins will place Tagovailoa on injured reserve, saying the team would evaluate him more Friday.
''I'm just worried about my teammate like the rest of the guys are,'' McDaniel said. ''We'll get more information tomorrow and then take it day by day from there.''
Allen, playing with a glove on his left non-throwing hand after hurting it in Buffalo's opener, completed 13 of 19 passes for 139 yards. He's 12-2 against the Dolphins, and the Bills are 14-2 against Miami since McDermott's first year as head coach in 2017.