GREEN BAY -

After losing two starters in the trenches to injuries, the Green Bay Packers are moving on with the preseason winding down.

They got a bit of good news Monday when defensive tackle Letroy Guion returned from a hamstring injury that had sidelined him all of camp.

Guion hopes he can help ease the sting of the loss of nose tackle B.J. Raji to a season-ending biceps injury.

Rookie Corey Linsley is in his second day as the first-string center after presumed starter J.C. Tretter had a knee injury last week against Oakland that will sideline him for several weeks.

Tretter worked with the starters all of camp. Now Linsley has less than two weeks to prepare for the season opener Sept. 4 against Seattle.