The Vikings signed Koy Detmer today to serve as an insurance policy for a banged-up group of quarterbacks.

Detmer, in his 10th season in the league, was on the Eagles roster for all seven of Childress' years in Philadelphia. Childress worked with Detmer first as quarterbacks coach and then as offensive coordinator.

Minnesota starter Tarvaris Jackson had a concussion on Sunday against San Diego and backup Kelly Holcomb is still recovering from a whiplash-like injury two weeks ago against Philadelphia.

Childress said Monday that Jackson passed four of five concussion tests, but would still need further examination this week before deciding if he could play at Green Bay on Sunday.

Holcomb was scheduled to throw with a helmet on for the first time today since being injured while being thrown to the turf against the Eagles.

That left Brooks Bollinger as the only healthy quarterback on the roster. Bollinger has played the last two weeks in relief, completing 14 of 20 passes for 189 yards and a touchdown.

Detmer has eight career starts but was a backup to Donovan McNabb for most of his time with the Eagles.