Concussion forces Jackson to leave game; Jammer injures hamstring

MINNEAPOLIS -- Minnesota Vikings quarterback Tarvaris Jackson was carted off the field on Sunday with a concussion in the
second quarter against the San Diego Chargers.

Jackson took off running on first-and-10 from the Minnesota 36
and scooted past the first-down marker. But as he was tackled,
Jackson took a leg to the head. He remained on the turf with his
hand up in the air in an awkward position, and several teammates
took a knee in prayer nearby.

After a few minutes, Jackson sat up and was talking to team
trainers before he was taken away. He rode on the cart to the
tunnel to the locker room, then got up and walked into the room on
his own power.

Jackson was on the sideline without pads on for the second half.
Brooks Bollinger played in his place.

San Diego cornerback Quentin Jammer and defensive lineman Luis Castillo were also injured in the game. Jammer pulled a hamstring
in the second quarter and was ruled out for the rest of the game,
and Castillo injured his right leg in the third quarter and had to
be helped off the field.

Coach Norv Turner said Castillo strained his knee and sprained
his ankle on the play.

"I don't want to comment on how serious it is before they are
able to do the tests they need to do, the MRI, but it looks like
one that will keep him out a while," Turner said.

The Chargers already were without linebacker Shaun Phillips, a
Pro Bowl alternate last season who missed the game with a groin