The Buffalo Bills have ruled out four players for Week 13 at the Pittsburgh Steelers.

LT Dion Dawkins (concussion), RT Spencer Brown (shoulder), LB Terrel Bernard (elbow) and WR Curtis Samuel (elbow/knee) will all miss Sunday's road game, Bills head coach Sean McDermott shared on WGR550.

Dawkins did not practice Wednesday or Thursday while still in concussion protocol. He was cleared to return by an independent neurologist against the Texans, but he displayed concussion-like symptoms the day after game and entered the protocol, according to McDermott.

Brown and Bernard both exited last week's game against Houston with injuries; Samuel will miss his second straight game due to injury.

WR Joshua Palmer (ankle) and TE Dalton Kincaid (hamstring) will be limited during Friday's practice. Pa

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