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Mario Williams expected to play at New England

Defensive end Mario Williams, nursing a concussion earlier this week, is expected to play Sunday against the New England Patriots.

Williams has been cleared for onfield activities and to play following his latest exam within the NFL concussion protocol, according to an NFL source.

Williams was on the field during the portion of practice open to the media Friday afternoon. 

Assuming Williams suffers no setback in this practice or anytime before Sunday's game,and passes one final test Saturday, the Dolphins will have one of their most effective defensive lineman from Week One on the field against the New England Patriots.

Williams had a sack in 45 snaps before he suffered the concussion last week at Seattle. The Dolphins have made no secret of the fact when Williams left the game, the Miami defense lost something. It was after Williams left the game that the Seahawks were able to engineer their game-winning drive.

Receiver DeVante Parker, who has been limited with a hamstring injury this week, practiced again Friday at least on a limited basis. He is expected play Sunday.

reported earlier today center Mike Pouncey is not play Sunday ... or possibly for a while longer.