Posted by ESPN.com's Kevin Seifert
EDEN PRAIRIE, Minn. -- Minnesota coach Brad Childress didn't shed much light on his quarterback situation during a Monday news conference, saying that starter Gus Frerotte is "day-to-day" with a "lower back injury" but declining to be more specific.
Tarvaris Jackson would start Sunday at Arizona if Frerotte can't, a scenario that seemed likely given the way Frerotte was moving in the Vikings' postgame locker room Sunday at Detroit. The Star Tribune reported that Frerotte might have a lower-back fracture, but Childress would not confirm that condition.
"He's obviously very sore," Childress said. "But he's been sore before. He's looked like that moving around before. We'll see where he's at when we get to Wednesday."
Jackson led the Vikings to 17 second-half points in a 20-16 victory over the Lions, but Childress said that Frerotte's health will be the sole factor in determining who starts against Arizona. If Frerotte can't play, rookie John David Booty would serve as Jackson's primary backup. Childress said the Vikings might "peek" at the available free agent quarterbacks later in the week.
This will be the story of the week in Minnesota and one of the bigger stories in the NFC North, but for now it's a tough one to guess. I will say this: Frerotte will have to make an awfully fast recovery to be ready in time to start against the Cardinals.