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Packers running back Cedric Benson said after Sunday’s game that he didn’t think the foot injury he suffered was serious. It appears that he was wrong.

Adam Schefter of ESPN reports that Benson has the Lisfranc foot injury and is expected to miss at least eight weeks. That means the most optimistic assessment of Benson’s injury is that he’ll be back for Week 13, and if he needs surgery, he’ll be out for the entire season.

Although the Packers haven’t confirmed Benson’s injury, coach Mike McCarthy acknowledged that Benson will miss some time, and said that’s going to be tough for Green Bay’s offense.

“I thought Cedric was really coming on the last couple weeks, I was excited about him, what he brings to the table,” McCarthy said. “Now, our younger backs will have to give us that because we need the run game. It’s important. I’m not interested in throwing it 50 times a game. So we just need to be more consistent.”

The Packers will rely on Alex Green, James Starks and Brandon Saine at running back with Benson out of the lineup.