ORCHARD PARK, NY - Bills' defensive tackle Marcell Dareus still has not seen the field in a game this season because of a four-game suspension then a hamstring injury last week and may miss another game this Sunday.

Dareus did not practice this week with the hamstring injury and is "doubtful" for Sunday's game against the 49ers.

On Friday, Rex Ryan wouldn't officially rule Dareus out but it doesn't look good.