Minnesota Vikings running back Adrian Peterson returned to practice Friday and is expected to play at Cincinnati on Sunday.

Peterson, the league's second-leading rusher, is listed as questionable because of a sprained foot.

"I'm looking forward to playing this week," Peterson said Friday. "Get another day to rest tomorrow, which is going to be good. As far as the foot goes, I'll be ready to go."

Peterson has 1,221 yards rushing and trails Philadelphia's LeSean McCoy by 122 with two games left. He said he still feels the rushing title is within his reach.

"Yeah, (the margin is) not over 200 yards, so it's still in play," Peterson said, saying earlier: "I play this game to be the best. So with that, leading the league goes along."

Packers: Quarterback Aaron Rodgers, out since fracturing his left collarbone Nov. 4, was officially ruled out of playing against Pittsburgh.

That means Matt Flynn will start for the fourth consecutive game, and players seem to be fine with that.

"He had a good week of practice, so this decision doesn't shock any of us," guard T.J. Lang said. "It's been a distraction in the past, but I don't think it is anymore. Everybody is just ready to go forward with Matt."

Broncos: Wide receiver Wes Welker was ruled out of Denver's game against Houston as a precaution against a third head injury this month, which would end his season.

Welker hasn't played since leaving the Broncos' game against Tennessee on Dec. 8.

Jaguars: Running back Maurice Jones-Drew practiced in a limited capacity, a sign he might be able to play against the Tennessee Titans.

Coach Gus Bradley said Jones-Drew will be a game-day decision.

Chiefs: Dangerous punt returner Dexter McCluster will be ready to face the Indianapolis Colts after missing a game against the Raiders because of an infection in his ankle.

Eagles: Quarterback Nick Foles was fined $10,000 by the NFL for an illegal block on Minnesota's Erin Henderson.

Foles went down low at Henderson's knees, drawing a penalty and negating DeSean Jackson's 18-yard touchdown.

Seahawks: Right guard J.R. Sweezy will sit out against the Arizona Cardinals because of a concussion.

Jets: Safety Ed Reed delivered a few hard hits to critics in the media after appearing to be irritated by questions about the team's recent problems with allowing big plays and his own struggles since coming to New York.

"It's football," Reed said. "We in this locker room have been playing football for a long time. Nobody is perfect out on the football field. You guys' job is to critique, be critics, that's what you do. That's why you ask the controversial questions. You try to make it controversial and then you trash people in the media."

The Milwaukee Journal Sentinel contributed to this report.