Donovan McNabb is doubtful for the Philadelphia Eagles' game against the Seattle Seahawks on Sunday after missing practice again Friday.
The five-time Pro Bowl quarterback has been sidelined since spraining his right ankle and injuring his thumb in a win over Miami on Nov. 18.
VIKINGS: Running back Adrian Peterson was listed as probable for Minnesota's game against Detroit on Sunday after missing two games because of a torn lateral collateral ligament in his right knee.
Wide receiver Troy Williamson , a former Silver Bluff and South Carolina standout, was listed as doubtful because of lingering effects from a concussion.
PANTHERS: Quarterback Vinny Testaverde is probable for Carolina's game Sunday against San Francisco after making it through an entire week of practice.
The 44-year-old woke up with a bad back last Sunday. Trainers and chiropractors couldn't get him ready for a game against New Orleans, and the Panthers were forced to go with David Carr. He struggled again in the Panthers' 31-6 loss.
SEAHAWKS: Running back Shaun Alexander will start in Sunday's game at Philadelphia after practicing for third consecutive days following a 31/2-week absence with a sprained knee.
BILLS: Running back Marshawn Lynch and starting defensive end Chris Kelsay won't play Sunday at Washington. Lynch will miss his third consecutive game because of a severely sprained left ankle. Kelsay is out after hurting his left ankle in a loss to Jacksonville last Sunday.
DOLPHINS: Middle linebacker Zach Thomas will miss his fifth consecutive game because of migraines when Miami plays the New York Jets on Sunday.
CHIEFS: Quarterback Brodie Croyle will miss Kansas City's game Sunday against San Diego with a "deep, deep bruise" in his lower back. Damon Huard will start in his place.
TITANS: Defensive tackle Albert Haynesworth returned to practice in preparation for Sunday's game with Houston. Haynesworth has missed the past three games with a right hamstring injury.
TEXANS: Running back Ahman Green will miss his third consecutive game with a knee injury when Houston plays Tennessee on Sunday. Ron Dayne will start in his place.
- Offensive lineman Chester Pitts apologized to his family and team, one day after he was arrested and charged with speeding off during a traffic stop near Reliant Stadium in Houston.