Lions will finish season with Best

Jahvid Best’s season is over, leaving the Detroit Lions to try to piece together an effective running game without their leading rusher.

Best has been bothered by concussion problems and hasn’t played since Oct. 16, when the Lions lost to San Francisco. After starting 5-0, Detroit has lost four of six, beginning with that game against the 49ers.

The team says the move is expected to become official next week.

Best started the first six games of this season, running for 390 yards on 84 carries. Coach Jim Schwartz said Best started experiencing “concussion-like symptoms” after the loss to San Francisco.

Orton likely to sit

Kyle Orton will have the opportunity to compete for the Kansas City Chiefs’ starting quarterback job, though in all likelihood it’ll be after Sunday’s game against the Pittsburgh Steelers.

Chiefs coach Todd Haley acknowledged Orton joined the team Friday after getting picked up off waivers from Denver on Wednesday.

Orton probably won’t have a chance to absorb much of the playbook before the game against the Steelers. Tyler Palko will get his second consecutive start in place of injured Matt Cassel.

Vick throws, but still questionable

Philadelphia Eagles quarterback Michael Vick threw for a second straight day, but did not take part in any practice drills.

Vick, bothered by broken ribs, is listed as questionable for Sunday’s game with the New England Patriots.

Wide receiver Jeremy Maclin (hamstring), cornerback Nnamdi Asomugha (knee) and backup offensive lineman King Dunlap (concussion) could also miss Sunday’s game.

Around the league

San Francisco safety Dashon Goldson was fined $25,000 by the NFL for punching Arizona receiver Early Doucet in last Sunday’s game. Doucet was fined $10,000 for unnecessary roughness when he struck Goldson in the helmet area. Goldson then threw his punches…. Denver linebacker Von Miller was fined $25,000 for roughing the passer against Jets quarterback Mark Sanchez. … Green Bay Packers outside linebacker Erik Walden was arrested on suspicion of felony domestic violence/substantial battery and will remain in the Brown County Jail until at least Monday. Walden allegedly assaulted his live-in girlfriend at the couple’s apartment in Lawrence, just outside of Green Bay.

Minnesota Vikings running back Adrian Peterson is doubtful for Sunday’s game at Atlanta because of a high ankle sprain. … Oakland Raiders wide receiver Darrius Heyward-Bey practiced without pain five days after injuring his neck and spine and suffering a concussion while being tackled by Minnesota linebacker E.J. Henderson. Heyward-Bey is questionable for Sunday’s home game against Chicago. … New York Jets running back LaDainian Tomlinson (sprained knee) is listed as questionable and appears unlikely to play in the team’s game Sunday against the Buffalo Bills.