Updated

Minnesota Vikings coach Leslie Frazier says he will decide later this week whether Josh Freeman or Christian Ponder will start at quarterback against Dallas on Sunday.

The Vikings have changed quarterbacks for four consecutive games while looking for some consistency and playmaking at the position. The only one to win a game this season for them is veteran Matt Cassel, who beat Pittsburgh in London three games ago.

Frazier says he believes Freeman or Ponder give the Vikings the best chance to win. Freeman was signed earlier this month and started against the New York Giants two weeks ago. But he suffered a concussion and forced Ponder back into the game against Green Bay on Sunday night.

Ponder struggled in a 44-31 loss to the Packers.