ASHBURN, Va. – Robert Griffin III practiced for the third straight day on his sprained right knee Friday, albeit again on a limited basis, and is officially listed as questionable for Sunday’s game against the Cleveland Browns.

“He keeps on improving every day,” Coach Mike Shanahan said. “He’s much better today.”

Shanahan again said he will wait until Sunday to reveal whether Griffin or fellow rookie Kirk Cousins will start. He said the quarterbacks might be informed of the decision Saturday night.

Griffin, the league’s top-rated passer, looked fine during Friday’s session as he stretched with his teammates and made a few throws during the 15 minutes reporters were allowed to watch. It would have been difficult to tell he was injured if it weren’t already known.

Griffin sprained his lateral collateral ligament when he was hit by defensive tackle Haloti Ngata late in regulation in last week’s 31-28 overtime victory over the Baltimore Ravens.

GIANTS: Ahmad Bradshaw will miss the game Sunday against the Atlanta Falcons.

Coach Tom Coughlin confirmed that Bradshaw will not play Sunday due to lingering knee and foot problems.

Bradshaw, who has 869 yards and five touchdowns on the ground this season, has played through injury before. But the sprained knee the six-year veteran suffered Sunday in the 52-27 win over New Orleans did not recover in time for him to practice this week.

The Giants will turn to rookie David Wilson, who had a spectacular game against the Saints, as well as recent free-agent signees Ryan Torain and Kregg Lumpkin, either of whom have yet to carry the ball this season for the Giants.

SEAHAWKS: Seattle will be without starting cornerback Walter Thurmond against the Buffalo Bills in Toronto on Sunday. Thurmond injured his hamstring during practice Wednesday and has been officially ruled out. The Seahawks will be forced to start their third cornerback in as many weeks against the Bills.

PACKERS: The team expects to have linebacker Clay Matthews back in the lineup Sunday against the Chicago Bears and Coach Mike McCarthy couldn’t be happier about it.

“I thought he looked good all week,” McCarthy said after the Packers held their last practice before the game. “I look for Clay to play and make an impact in the game.”

Matthews practiced the last three days without incident. The team’s top pass rusher has missed the last four games because of a recurring hamstring injury.

BEARS: Quarterback Jay Cutler appears ready to play Sunday against the Green Bay Packers.

Cutler went through a full practice Friday despite knee and neck problems, and was officially listed as probable.

The Bears also ruled out receiver Earl Bennett (concussion), cornerback Tim Jennings (shoulder) and Brian Urlacher (hamstring) for the second straight week.

Defensive end Shea McClellin (knee) and defensive tackle Henry Melton (chest) are doubtful, while running back Michael Bush (ribs), linebacker Geno Hayes (knee) and defensive tackle Matt Toeaina (knee) are questionable.

COLTS: Two starting offensive linemen will stay home when Indianapolis travels to Houston this weekend.

Coach Bruce Arians said center Samson Satele (ankle) and right tackle Winston Justice (biceps) will not travel with the team. Running back Delone Carter (ankle), linebacker Kavell Conner (hamstring) and safety Tom Zbikowski (knee) also will not make the trip.

JETS: Tim Tebow might not be done in the wildcat after all.

Coach Rex Ryan reversed his decision, saying the backup quarterback could possibly participate in the wildcat-style offense and on special teams as the personal punt protector at Tennessee on Monday night.

On Thursday, Ryan said Tebow would be the backup to Mark Sanchez, but only in the conventional offense as Tebow continues to recover from two broken ribs.

VIKINGS: Cornerback Antoine Winfield has been listed as questionable for Sunday’s game at St. Louis because of a knee injury.

Winfield was held out of practice again Friday, but Coach Leslie Frazier said the 35-year-old should be all right to face the Rams.

DOLPHINS: Receiver Davone Bess and linebacker Koa Misi have been ruled out of Sunday’s game against Jacksonville.

Bess missed practice this week with a back injury, and Misi has been sidelined since hurting his ankle in last week’s loss at San Francisco.