Jackson had his best season cut short after getting hurt in the second half of Buffalo’s blowout loss Sunday at Miami. He ranks third in the N.F.L. with 934 yards rushing and trails only Chicago’s Matt Forte with 1,376 yards from scrimmage.
C. J. Spiller becomes the starter. The Bills also signed running back Tashard Choice, who was released by Washington on Tuesday after starting the season with Dallas.
NEW HOME FOR ORTON Kyle Orton, who was released by Denver on Tuesday, was claimed off waivers by Kansas City. The Chiefs were searching for a veteran quarterback after losing Matt Cassel to a season-ending injury.
Orton, a former starter for Chicago who passed for 3,000 yards each of his first two seasons in Denver, became expendable when the Broncos opted to go with Tim Tebow as the starter.
SCHAUB OUT FOR YEAR Houston quarterback Matt Schaub was placed on injured reserve after finding out he will need surgery to repair an injury in his right foot. The Texans signed Kellen Clemens, but Matt Leinart will start for Houston (7-3) at Jacksonville (3-7) on Sunday.
Texans Coach Gary Kubiak had been hoping Schaub might return this season after he was hurt in Houston’s 37-9 win over Tampa Bay on Nov. 13.
PETERSON STILL IN BOOT Minnesota’s Adrian Peterson remained in a walking boot to treat a high ankle sprain on his left leg, and Coach Leslie Frazier said he would not play on Sunday against Atlanta if he could not practice in the next two days. Peterson missed practice Wednesday after sustaining the injury against Oakland last weekend. Frazier said the team hoped the boot would be removed Thursday. But if Peterson cannot practice this week, Minnesota will not try to push him to get ready for Atlanta.
YOUNG IS READY Philadelphia’s Vince Young is preparing to make his second straight start in place of the injured Michael Vick when the Eagles host New England on Sunday. Vick missed practice because of two broken ribs that forced him to miss the Eagles’ 17-10 win over the Giants last Sunday.
KOLB IS HOPEFUL Arizona quarterback Kevin Kolb went through a substantial practice for the first time since his injury three weeks ago and said he was “absolutely” optimistic he would be able to play Sunday at St. Louis. Kolb, who said he took 35 to 40 percent of the first-team repetitions Wednesday along with about half of the scout team reps, has been frustrated by his slow recovery from a right turf toe and bruise on the side of the same foot.
The backup John Skelton started in wins over St. Louis and Philadelphia, but struggled mightily in Arizona’s 23-7 loss at San Francisco last Sunday.
AROUND THE LEAGUE Tennessee quarterback Matt Hasselbeck said he would start Sunday against Tampa Bay. Hasselbeck banged his right elbow off a defender in last week’s 23-17 loss to Atlanta midway through the third quarter. … Chicago agreed to terms on a deal with the veteran quarterback Josh McCown to give the team depth after the injury to Jay Cutler. … New England released safety Ross Ventrone for the seventh time this year, letting him go to make room for offensive lineman Donald Thomas two days after Thomas was released so Ventrone could be activated for Monday night’s game against Kansas City.
GIANTS’ BEATTY NEEDS SURGERY Left tackle Will Beatty will have surgery to repair a detached retina, the team said, and his recovery time will be determined after he meets with his doctor following the surgery.
The Giants also placed cornerback Michael Coe on injured reserve with a shoulder injury and signed Will Blackmon to replace him. Blackmon, a sixth-year veteran, played five games for the Giants in 2010. Additionally, the Giants re-signed defensive tackle Dwayne Hendricks to the practice squad and terminated the contract of defensive end Craig Marshall. SAM BORDEN