After the Dolphins’ opening win streak came to a crushing end in Buffalo, Chris Perkins and David Furones ask how much blame Vic Fangio’s defense should get. Is Miami’s offensive line in trouble without Armstead? Should rookie De’Von Achane be the starting running back? Plus, grading the Dolphins so far this season and predictions for this Sunday's game at home against the Giants. Kickoff is 1 p.m.