Panthers scramble for QB: Carr ruled out, Vinny questionable

Undrafted out of Oregon State after transferring from UCLA, Moore was cut by Dallas in the preseason. The Panthers signed him in September and he has played briefly in three games, completing three of seven passes with one interception.

"I've had confidence in every guy we've sent out there, from Jake all the way to Vinny with three days' practice," Fox said. "I think everybody on the team and everybody on the coaching staff has confidence in whoever goes out there."

If Moore has to start, the Panthers would likely have to sign Olson to the active roster Saturday to be his backup. Olson, who beat out Moore as the starter at UCLA, spent last season on Baltimore's practice squad. He was out of the league until the Panthers called Tuesday.

Olson was brought in to run the scout team this week, but Fox said they have also taught Olson some of the Panthers' offense.

As had happened so many times this season, Fox left the practice field Friday with no idea who his starting quarterback will be.

"I'm not being evasive," Fox said. "Honestly, it's day to day."