Packers S Evan Williams exits loss to Lions with concussion - ESPN

DETROIT — Already down two members of the secondary to start the game, the Green Bay Packers lost safety Evan Williams in the first half of Thursday night's 34-31 loss to the Detroit Lions because of a concussion.

The rookie walked to the locker room under his own power to be evaluated and did not return.

Zayne Anderson, who had played just eight snaps on defense all season entering Thursday, replaced Williams.

The Packers were without cornerbacks Jaire Alexander (knee) and Corey Ballentine (knee) to start the game. They also were without linebacker Edgerrin Cooper (hamstring).