Peterson, Ponder hurt; Vikings top Redskins 33-26

On the play after Peterson was hurt, Ponder suffered a head injury when sacked by Adam Carriker and London Fletcher. Ponder remained in the game for one more play — a third-down incomplete pass — before heading to the locker room.

Frazier said Ponder had "concussion-like symptoms." The coach said he's uncertain whether the quarterback will play in next week's season finale against the Bears.

"We'll have to weigh it when we get back," Frazier said, "and I'll follow the doctor's lead."

With the way Webb is playing, Ponder might get the week off anyway.

Notes: Grossman had two more giveaways — a lost fumble and interception — to put his total at 24 for the season. He was already tied for the most turnovers in the NFL entering the game. ... Washington's Evan Royster, getting the start with fellow rookie Roy Helu out with an injury, ran for 132 yards on 19 carries. ... Minnesota's Jared Allen had one sack to raise his total to 18½. ... The Vikings were also short-handed along the offensive line, with guard Steve Hutchinson inactive with a concussion and guard Anthony Herrera sidelined for part of the game with a lower back injury.

Joseph White can be reached at http://twitter.com/JGWhiteAP