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Evan Vucci, Associated Press
Minnesota Vikings quarterback Christian Ponder (7) is sacked by Washington Redskins nose tackle Barry Cofield (96) and defensive end Adam Carriker (94) during the second half of an NFL football game in Landover, Md., Saturday, Dec. 24, 2011.

EDEN PRAIRIE, Minn. — Christian Ponder has passed all his concussion tests and is expected to start at quarterback for the Minnesota Vikings in the season finale against Chicago on Sunday.

Ponder returned to practice on Wednesday after he was knocked out of the game against the Redskins. He says he had a slight headache on Saturday night after the game, but felt better on Sunday and is ready to go.

Ponder was 8 of 13 for 68 yards before leaving the game against the Redskins. Joe Webb came in to lead the Vikings to just their third victory of the season. He was 4 for 5 for 84 yards and two touchdowns and also rushed for 34 yards and a score.

Coach Leslie Frazier says Ponder remains the team's No. 1 quarterback.