Green Bay Packers quarterback Aaron Rodgers might not practice all week, and his status for Sunday's game at New England remains unclear.
Rodgers sustained a concussion -- his second of the season -- during the Packers' loss at Detroit last Sunday.
Packers coach Mike McCarthy said Rodgers won't practice until Friday at the earliest, and even that seems unlikely.
"He will not practice throughout this week and will go through the protocols," McCarthy said, adding that Rodgers also didn't participate in meetings or study film Wednesday. "Slim to none chance he will practice Friday. The decision (on his availability for the game) will be made Saturday.
"We will not put him through the conditioning portion of the testing before Friday."
Backup Matt Flynn took the majority of snaps in Wednesday's practice, with practice-squad quarterback Graham Harrell also receiving some work.
"This week, (Flynn will) take all the reps," McCarthy said. "We'll spend extra time.
"It's important that when we get on that plane Saturday, he's fully prepared. We're fully confident in Matt's abilities."
Three more starters -- defensive end Cullen Jenkins, guard Daryn Colledge and outside linebacker Frank Zombo -- also sat out the portion of practice open to the media Wednesday. McCarthy already has declared Jenkins out, and the coach said he is close to doing the same for Zombo.
"I don't see him making it," McCarthy said. "Maybe he'll surprise me, but I think he's a long shot this week."
Several other starters -- left tackle Chad Clifton, linebacker Clay Matthews, defensive lineman Ryan Pickett and guard Josh Sitton -- were limited at practice.