Dallas Cowboys LB Sean Lee out with concussion

NEW ORLEANS -- Dallas Cowboys linebacker Sean Lee left Sunday's game against the New Orleans Saints to be tested for a head injury.

Lee, who missed all of last season with a knee injury, had his helmet taken away by team trainers before he was escorted to the locker room at Mercedes Benz Superdome.

The Cowboys announced in the second quarter Lee was ruled out for the remainder of the game.

Early in the third quarter, Dallas running back Lance Dunbar was carted off the field due to a knee injury.