Minnesota Vikings rookie Adrian Peterson was helped off the field in the second half against Green Bay on Sunday, ending a frustrating day that came on the heels of a record-breaking performance.
Peterson made an 11-yard catch in the third quarter of Minnesota's 34-0 loss when he was hit by cornerback Al Harris in the middle of the field. The tackle sent Peterson sprawling and he writhed in pain before limping off with the help of trainers.
He was diagnosed with a sprained right knee and said an MRI exam is scheduled today.
Packers coach Mike McCarthy said defensive tackle Cullen Jenkins "banged" his knee but did not elaborate on the injury. Green Bay also lost right tackle Mark Tauscher to an ankle injury.
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Saints running back Reggie Bush left briefly after getting slammed to the ground against the Rams. New Orleans also lost starting left tackle Jammal Brown to a lower left leg injury.
The Titans lost running back LenDale White to a knee injury, although coach Jeff Fisher said he could have returned in their 28-13 loss to Jacksonville.
Kansas City quarterback Damon Huard was shaken up on a hit by Denver's Elvis Dumervil in the third quarter of a 27-11 loss. Huard sat out the rest of the game with an ice pack on his neck, and was replaced by second-year pro Brodie Croyle.
Colts tight end Dallas Clark joined wide receiver Marvin Harrison on the inactive list Sunday night against San Diego. The Colts were missing three other injured starters: linebackers Tyjuan Hagler and Freddy Keiaho, and left tackle Tony Ugoh.
Buffalo lost cornerback Kiwaukee Thomas to a groin injury in the fourth quarter against the Dolphins. The Bills said it could be serious.
Dolphins defensive end Jason Taylor left early in the third quarter with an ankle injury, and fellow defensive lineman Matt Roth left in the second quarter with a groin injury.