Brad Childress just finished his weekly Monday press conference, and the lingering question in the room was who the Vikings starting quarterback would be Sunday against the Cardinals. The Vikings lost veteran starter Gus Frerotte to a lower back injury at the end of the first half the 20-16 win over the Lions, and turned over the offense to Tarvaris Jackson — who began the season as the starter — after halftime.

Childress isn’t ready to name his starter, but had just spoken with Frerotte in the locker room.

“He’s very sore,” said Childress. “He’s been sore before. He’s looked like that before. We’ll see where he’s at on Wednesday.”

Childress gave a positive report on Jackson, who was 8-of-10 for 105 yards with a touchdown in his first real action since Week 2. Jackson struggled in starting the first two games of the season as the Vikings began 0-2, prompting the move to Frerotte. Whoever gets the call will be trying to help the Vikings clinch the NFC North for the first time since 2001.

“Whoever gives us the best chance to win when we get to later in the week,” said Childress on who will get the call. “Tarvaris Jackson did a grat job. A great, great job. We just want to see who gives us the best opportunity to win, and obviously health is a big factor in that.”