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McClain did not practice Wednesday and was limited in workouts on Thursday. If he can’t play in Sunday’s home game against Cleveland, the Raiders are expected to start Darryl Blackstock.

Curry could provide insurance behind Blackstock in the middle but Jackson sounded as though the Raiders plan to leave him on the outside for now.

“I don’t want to put him in a whole bunch of spots,” Jackson said. “I want to let him play one thing and let him become great because I think the guy has great talent.”

Notes: A team official announced that the game has been sold out, marking the first time since 2008 that the Raiders have sold out three consecutive home games. Team officials have planned a tribute to Davis for the game and several former players are expected to take part.