LANDOVER, Md. (AP/ABC7) — A person with knowledge of the situation tells The Associated Press that Washington Redskins left tackle Trent Williams and tight end Fred Davis are expected to be suspended by the NFL for the rest of the season for violating the league's substance abuse policy.

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The person spoke Sunday on condition of anonymity because no official announcement has been made.

Both players are starters for the Redskins, who fell to 4-8 with a 34-19 loss to the New York Jets on Sunday. Davis had six catches for 99 yards receiving, both game-highs.

SI.com first reported Sunday that Davis and Williams would be punished. Citing an unidentified source, the website also said the players hadn't received written notice from the league about their suspensions, so were able to play Sunday.

Davis, who is in his fourth year with the Redskins, has already easily surpassed career highs in receptions and receiving yards in 2011. He has 59 catches and 796 receiving yards this season to lead the team.

Williams, an offensive tackle in his second season out of Oklahoma, has missed time over the course of this season with injuries.