One week after making his season debut, outside linebacker Frank Zombo did not practice on Wednesday and has already been ruled out for this week's game against the Minnesota Vikings.

Zombo hyperextended his knee in the Week 6 game against the Rams after having missed the first five weeks of the season with a broken scapula.

"Frank had an unfortunate setback," said head coach Mike McCarthy in his Wednesday press conference. "I would think he would be ready after the bye week. I don't think this is going to be anything long."

Fellow outside linebacker Jamari Lattimore may join him on the inactive list with an injured shoulder. He didn't practice this afternoon, though he hasn't officially been ruled out like Zombo.

"It's time to probably shut him down for a week," said McCarthy.

With the annual bye following the Vikings game, players will get an extra extra week of rest and recovery before coming back for game at San Diego in Week 9.

Josh Sitton, who was limited all last week with an ankle injury, now has a knee injury to go along with it. He didn't practice at all on Wednesday, and McCarthy said he may be a limited participant in tomorrow's practice and hopes that he can practice in a fuller capacity by Friday.

Cornerback Sam Shields, who suffered a concussion in the Rams game, did not practice but did undergo testing on Wednesday, and according to McCarthy the doctors feel good about the progress he's made.

They must also feel good about cornerback Charles Woodson who practiced on a Wednesday for the first time since Week 2. He had typically been held out of the first practice of the week with foot and knee injuries, but is making progress.

As far Chad Clifton goes, McCarthy said he's getting better.

"Just the medical report today, he's making progress, and he's going through another procedure this week that they think is definitely going to help him," said McCarthy.

No decision will be made about Clifton's long-term prognosis until the bye week, however.