The Buffalo Bills may be without both starting offensive tackles on Sunday when they play the Pittsburgh Steelers and their strong pass rush. Right tackle Spencer Brown left Sunday’s game with a shoulder injury and did not practice Wednesday. Joining him on the injured list was left tackle Dion Dawkins, who has entered the concussion protocol.

In order to exit the protocol in time for Sunday’s game, Dawkins will need to be a limited participant on Thursday and a full participant on Friday to have a shot at playing Sunday. Players must participate in one full-contact practice and pass a review with the independent neurologist to be cleared.

If one tackle can’t go, Ryan Van Demark has stepped in every time either has missed a snap. If both tackles can’t go, Alec Anderson would likely be th

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