Head coach Sean McDermott said that Gilliam (hip) won't play in Sunday's game against the Dolphins, Alaina Getzenberg of ESPN.com reports.
Gilliam was a limited participant in Wednesday's practice before not taking any reps Thursday, so the Bills' decision to rule him out isn't especially surprising. The fullback has played primarily on special teams this season and has yet to receive a carry or draw a target over his 35 snaps on offense.