A.J. Jefferson's concussion further cuts into Vikings' depth at corner
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MINNEAPOLIS -- The Minnesota Vikings could be down another cornerback for next week's game at St. Louis.
A.J. Jefferson suffered a concussion in the fourth quarter of Sunday's 21-14 win over Chicago "and we'll have to wait and see how he progresses over the course of the week," coach Leslie Frazier said.
The injury occurred while Jefferson was trying to tackle Bears halfback Matt Forte after a catch on second-and-2.
He appeared to collide with two teammates and didn't move for several seconds afterward but ended up walking off the field on his own and was seen in the locker room after the game.
Jefferson took over as a starting cornerback after Chris Cook broke an arm on Oct. 25 against Tampa Bay and was placed on injured reserve with designation to return.
Cook isn't eligible to return to the active roster until Dec. 20, though, meaning the Vikings' depth would be tested if Jefferson can't go against the Rams.
Frazier said there were no other significant injuries in the game.
Left guard Charlie Johnson tweaked his left ankle but stayed in. He iced the ankle after the game and left the locker room without wearing a shoe.